balancedadj.

Brit.

/ˈbalənst/,

/ˈbaln̩st/, U.S.

/ˈbælənst/

Etymology: Formed as balanceable adj. + -ed suffix¹.

1. literal.

a. Poised; so arranged, placed, or adjusted with a counterpoise, as to remain in equilibrium.

ΘΚΠ

the world > space > relative position > support > absence of support > [adjective] > held up without support

poised1596

balanced1611

self-poised1621

self-sustained1675

suspended1817

free-standing1837

self-standing1871

1611 R. Cotgrave Dict. French & Eng. Tongues Balancé, Ballanced, weighed, peised.

1667 J. Milton Paradise Lost iv. 1000 The pendulous round Earth with ballanc't Aire In counterpoise.

1815 W. Scott Lord of Isles iii. xv. 100 Loose crags..chance-poised and balanced, lay.

b. spec. Of a rudder or of the control surface of an aeroplane: see quots.

ΘΚΠ

society > travel > travel by water > vessel, ship, or boat > equipment of vessel > steering equipment > [adjective] > balanced (of rudder)

balanced1869

society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > [adjective] > balanced (of control surface)

balanced1920

1869 Daily News 12 June The Cerberus has a balanced rudder.

1874 S. J. P. Thearle Naval Archit. (new ed.) I. iv. xx. 340 The balanced rudder revolves about an axis so situated that about two-thirds the area of the rudder is on the aft, and the remaining one-third on the fore side of the axis.

1920 Flight 5 Aug. 867/2 The aeronautical engineer needs some simple rule for the design of balanced control surfaces.

1922 Flight 14 344/1 Balanced ailerons are fitted to the top plane only.

1922 Flight 14 344/1 The tail plains [sic]..consist of..two balanced elevators hinged to the stabiliser, and a balanced rudder.

1950 Gloss. Aeronaut. Terms (B.S.I.) i. 34 Balanced surface, a control surface in which the aerodynamic hinge moment opposing rotation has been reduced by so shaping it that part of the surface is forward of the hinge, or by fitting it to a balance tab, or by other means.

2. Having the opposed parts or tendencies so adjusted as to produce equilibrium or equality.

ΘΚΠ

the world > relative properties > relationship > equality or equivalence > [adjective] > of or relating to equilibrium > balanced

evenc1390

pesablea1500

balanced1592

level1600

well-poised1603

well-balanceda1622

equipendenta1640

equilibrious1643

equiponderant1646

equiponderate1646

adjusted1652

equilibrous1652

equilibrated1664

equipoised1681

fairly-balanced1779

equilibriated1870

equilibrized1889

1592 S. Daniel Complaynt of Rosamond in Delia sig. K.3 Thus stood I ballanc'd equallie precize, Till my frail flesh did weigh me down to sinne.

1727 A. Pope Balance Europe 178 in J. Swift et al. Misc.: Last Vol. Now Europe's balanc'd, neither Side prevails.

1870 R. C. Jebb Sophocles' Electra Introd. 10 Contending and almost balanced claims.

1877 J. Ruskin Laws Fesole i. ii Every system is imperfect which pays more than a balanced and equitable attention to any one of the three skills.

a. Well arranged or disposed; stable in character by due proportion of parts.

ΘΚΠ

society > leisure > the arts > literature > style of language or writing > elegance > [adjective] > balanced

balanced1625

librated1801

equiponderated1820

the mind > attention and judgement > judgement or decision > discernment, discrimination > [adjective] > showing sound judgement > of persons

well-judging1587

judicious1591

discerning1594

sound1615

solid1632

well-weighed1645

weighed1647

serious-minded1694

well-hired1828

balanced1836

discriminating1849

adult1906

1625 F. Quarles Sions Sonets xii. sig. C4^v The rubie Portalls of thy ballanc'd words, Send forth a welcome relish.

1836 J. Gilbert Christian Atonem. iii. 83 Neither can it..operate with any weight upon a justly balanced mind.

1878 T. Sinclair Mount 83 The birth of a balanced artist.

b. spec. Dietetics. Containing a suitable proportion of each type of nutriment required for adequate nutrition.

ΘΚΠ

the world > food and drink > food > diet > [adjective] > balanced

balanced1908

1908 Sci. Amer. Suppl. 24 Oct. 267/2 The early summer dinner..of lamb and peas with a salad, bread and butter, and a little fruit perhaps, makes a good example of a well-balanced meal.

1912 Delineator LXXX. 45 Problem of supplying a properly balanced menu.

1917 Ladies' Home Jrnl. Nov. 56/2 She can't understand what is meant by a ‘balanced meal’.

1936 Discovery Apr. 98/2 A balanced diet, not merely a copious one is indicated.

4. Logic. (See quot.)

ΘΚΠ

the mind > mental capacity > philosophy > logic > logical proposition > [adjective] > of types of propositions

causalc1530

subalternate1599

equipollent1642

reduplicative1671

subalternating1671

pure1697

poristic1704

desitive1725

inceptive1725

contrary1739

exponible1788

analytic1797

analytical1797

poristical1828

oristica1832

oristicosemeiotica1832

balanced1849

plurative1849

molecular1892

dyadic1897

monadic1897

dispositional1909

non-atomic1934

1849 W. Thomson Outl. Laws of Thought (ed. 2) §71 The middle [term] is said to be balanced when it is distributed in both premisses alike. The extremes of the conclusion are balanced when both alike are distributed.

1870 F. C. Bowen Logic viii. 258 Moods..balanced as respects both Terms and Propositions.

5. Nautical. Reefed with a balance-reef (see balance v. 16).

ΘΚΠ

society > travel > travel by water > vessel, ship, or boat > equipment of vessel > masts, rigging, or sails > sail > [adjective] > reefed

reefed1726

balanced1750

balance-reefed1840

single-reefed1860

1750 in Essex Inst. Hist. Coll. (1910) XLVI. 96 We were obliged to hand the jibb and lay too under ballanced mainsail.

1764 W. Falconer Shipwreck (new ed.) ii. 63 The ballanc'd mizen rending to the head.

1802 A. Ellicott Jrnl. 26 Nov. (1803) 256 We had to heave too under a ballanced main-sail.

6. Other technical uses.

ΚΠ

1902 G. S. Newth Text-bk. Inorg. Chem. (ed. 9) i. x. 88 Reactions of this order are known as reversible or balanced actions.

1904 G. F. Goodchild & C. F. Tweney Technol. & Sci. Dict. 38/1 Balanced Steps, the method of arranging the steps of geometrical stairs to increase the going (width) at the small ends of the winders, and to give a better falling line to the handrail.

1918 W. H. Eccles Wireless Telegr. & Teleph. (ed. 2) 489 Balanced Detectors, a term applied to an arrangement of opposed rectifying detectors for reducing the effects of strong Xs in receiving apparatus.

1924 S. R. Roget Dict. Electr. Terms 17/1 Balanced load, a load in a three-wire system which is equally shared by the two sides, or in a polyphase system, where it is equally shared by the various phases.

1924 S. R. Roget Dict. Electr. Terms 17/1 Balanced modulator.

1929 P. Wilson & G. W. Webb Mod. Gramophones ix. 180 There is no permanent magnetic pull on the armature when no signal is passing through the coil. This type is therefore known as a ‘balanced armature’.

1930 Phillips & Tutt Mod. Gas Fitting xi. 341 The ‘Balance’ radiator is so called in that the air inlet and combustion products outlets are made continuous and ‘balanced’.

1933 K. Edgcumbe & F. E. J. Ockenden Industr. Electr. Measuring Instruments xiii. 279 A strictly ‘balanced’ circuit is one in which the currents, voltages, and phase displacements are the same for each phase.

1938 M. E. Fritsch & E. J. Salisbury Plant Form & Funct. v. 49 A mixture of ions in solution in such proportions that they exert no toxic effect is called a balanced solution.

1940 L. Hartshorn Radio Freq. Meas. iii. 48 The potential of one terminal is always as much above that of the screen (earth) as that of the other is below it. This is known as the balanced condition.

1944 Hackh's Chem. Dict. (ed. 3) 96/1 Balanced reaction, a reaction which can be made to proceed in either direction by variation of either temperature, pressure or concentration of the reactants.

1955 Archit. Rev. 117 93/2 Balanced-flue gas heaters are provided in the kitchens and serve the sink, lavatory basin and bath.

Draft additions 1993

Computing. Of a binary tree: such that for each node the left and right subtrees are of equal or approximately equal size, as measured by the number of levels or the number of nodes in each.

ΘΚΠ

society > computing and information technology > data > [adjective] > data structure

push-down1959

threaded1960

balanced1962

machine-coded1964

push-up1966

1962 Symposium Symbolic Lang. Data Processing 156 A Balanced Tree is accomplished by filling the levels of the tree to completion, i.e., no new levels are to be initiated as long as there are vacant catenae available in the preceding level.

1973 C. W. Gear Introd. Computer Sci. vii. 285 A balanced tree leads to fewer operations on the average if any item is equally likely to be referenced.

1976 N. Wirth Algorithms plus Data Struct. iv. 195 The rule is expressed as a recursive procedure as part of Program 4.3 which reads the input file and constructs the perfectly balanced tree.

1984 R. L. Kruse Data Struct. & Program Design v. 221 The algorithm..produces a binary search tree that is not always completely balanced.

Draft additions January 2010

balanced polymorphism n. Genetics genetic polymorphism that persists at a stable level within a population, being maintained by a selective advantage favouring heterozygotic organisms; an instance of this.

ΚΠ

1934 E. B. Ford Mendelism & Evol. (ed. 2) v. 94 It is perhaps possible that such divergence originated as a balanced polymorphism.

1964 Listener 11 June 952/1 Balanced polymorphism is something different... The existence of both sexes maintained indefinitely in roughly equal proportions is one example; the familiar ABO blood group genes provide another excellent example.

2005 C. Tudge Secret Life Trees xii. 312 Thus jack pines have a ‘mixed strategy’: the genes that make their cones so special are clearly of two kinds—some that gear the cone to fire, and some that enable it to respond to sunshine. Geneticists call this a ‘balanced polymorphism’.

This entry has not yet been fully updated (first published 1885; most recently modified version published online March 2022).

单词	balanced
释义	balancedadj. Brit. /ˈbalənst/, /ˈbaln̩st/, U.S. /ˈbælənst/ Etymology: Formed as balanceable adj. + -ed suffix¹. 1. literal. a. Poised; so arranged, placed, or adjusted with a counterpoise, as to remain in equilibrium. ΘΚΠ the world > space > relative position > support > absence of support > [adjective] > held up without support poised1596 balanced1611 self-poised1621 self-sustained1675 suspended1817 free-standing1837 self-standing1871 1611 R. Cotgrave Dict. French & Eng. Tongues Balancé, Ballanced, weighed, peised. 1667 J. Milton Paradise Lost iv. 1000 The pendulous round Earth with ballanc't Aire In counterpoise. View more context for this quotation 1815 W. Scott Lord of Isles iii. xv. 100 Loose crags..chance-poised and balanced, lay. b. spec. Of a rudder or of the control surface of an aeroplane: see quots. ΘΚΠ society > travel > travel by water > vessel, ship, or boat > equipment of vessel > steering equipment > [adjective] > balanced (of rudder) balanced1869 society > travel > air or space travel > a means of conveyance through the air > aeroplane > parts of aircraft > [adjective] > balanced (of control surface) balanced1920 1869 Daily News 12 June The Cerberus has a balanced rudder. 1874 S. J. P. Thearle Naval Archit. (new ed.) I. iv. xx. 340 The balanced rudder revolves about an axis so situated that about two-thirds the area of the rudder is on the aft, and the remaining one-third on the fore side of the axis. 1920 Flight 5 Aug. 867/2 The aeronautical engineer needs some simple rule for the design of balanced control surfaces. 1922 Flight 14 344/1 Balanced ailerons are fitted to the top plane only. 1922 Flight 14 344/1 The tail plains [sic]..consist of..two balanced elevators hinged to the stabiliser, and a balanced rudder. 1950 Gloss. Aeronaut. Terms (B.S.I.) i. 34 Balanced surface, a control surface in which the aerodynamic hinge moment opposing rotation has been reduced by so shaping it that part of the surface is forward of the hinge, or by fitting it to a balance tab, or by other means. 2. Having the opposed parts or tendencies so adjusted as to produce equilibrium or equality. ΘΚΠ the world > relative properties > relationship > equality or equivalence > [adjective] > of or relating to equilibrium > balanced evenc1390 pesablea1500 balanced1592 level1600 well-poised1603 well-balanceda1622 equipendenta1640 equilibrious1643 equiponderant1646 equiponderate1646 adjusted1652 equilibrous1652 equilibrated1664 equipoised1681 fairly-balanced1779 equilibriated1870 equilibrized1889 1592 S. Daniel Complaynt of Rosamond in Delia sig. K.3 Thus stood I ballanc'd equallie precize, Till my frail flesh did weigh me down to sinne. 1727 A. Pope Balance Europe 178 in J. Swift et al. Misc.: Last Vol. Now Europe's balanc'd, neither Side prevails. 1870 R. C. Jebb Sophocles' Electra Introd. 10 Contending and almost balanced claims. 1877 J. Ruskin Laws Fesole i. ii Every system is imperfect which pays more than a balanced and equitable attention to any one of the three skills. 3. a. Well arranged or disposed; stable in character by due proportion of parts. ΘΚΠ society > leisure > the arts > literature > style of language or writing > elegance > [adjective] > balanced balanced1625 librated1801 equiponderated1820 the mind > attention and judgement > judgement or decision > discernment, discrimination > [adjective] > showing sound judgement > of persons well-judging1587 judicious1591 discerning1594 sound1615 solid1632 well-weighed1645 weighed1647 serious-minded1694 well-hired1828 balanced1836 discriminating1849 adult1906 1625 F. Quarles Sions Sonets xii. sig. C4^v The rubie Portalls of thy ballanc'd words, Send forth a welcome relish. 1836 J. Gilbert Christian Atonem. iii. 83 Neither can it..operate with any weight upon a justly balanced mind. 1878 T. Sinclair Mount 83 The birth of a balanced artist. b. spec. Dietetics. Containing a suitable proportion of each type of nutriment required for adequate nutrition. ΘΚΠ the world > food and drink > food > diet > [adjective] > balanced balanced1908 1908 Sci. Amer. Suppl. 24 Oct. 267/2 The early summer dinner..of lamb and peas with a salad, bread and butter, and a little fruit perhaps, makes a good example of a well-balanced meal. 1912 Delineator LXXX. 45 Problem of supplying a properly balanced menu. 1917 Ladies' Home Jrnl. Nov. 56/2 She can't understand what is meant by a ‘balanced meal’. 1936 Discovery Apr. 98/2 A balanced diet, not merely a copious one is indicated. 4. Logic. (See quot.) ΘΚΠ the mind > mental capacity > philosophy > logic > logical proposition > [adjective] > of types of propositions causalc1530 subalternate1599 equipollent1642 reduplicative1671 subalternating1671 pure1697 poristic1704 desitive1725 inceptive1725 contrary1739 exponible1788 analytic1797 analytical1797 poristical1828 oristica1832 oristicosemeiotica1832 balanced1849 plurative1849 molecular1892 dyadic1897 monadic1897 dispositional1909 non-atomic1934 1849 W. Thomson Outl. Laws of Thought (ed. 2) §71 The middle [term] is said to be balanced when it is distributed in both premisses alike. The extremes of the conclusion are balanced when both alike are distributed. 1870 F. C. Bowen Logic viii. 258 Moods..balanced as respects both Terms and Propositions. 5. Nautical. Reefed with a balance-reef (see balance v. 16). ΘΚΠ society > travel > travel by water > vessel, ship, or boat > equipment of vessel > masts, rigging, or sails > sail > [adjective] > reefed reefed1726 balanced1750 balance-reefed1840 single-reefed1860 1750 in Essex Inst. Hist. Coll. (1910) XLVI. 96 We were obliged to hand the jibb and lay too under ballanced mainsail. 1764 W. Falconer Shipwreck (new ed.) ii. 63 The ballanc'd mizen rending to the head. 1802 A. Ellicott Jrnl. 26 Nov. (1803) 256 We had to heave too under a ballanced main-sail. 6. Other technical uses. ΚΠ 1902 G. S. Newth Text-bk. Inorg. Chem. (ed. 9) i. x. 88 Reactions of this order are known as reversible or balanced actions. 1904 G. F. Goodchild & C. F. Tweney Technol. & Sci. Dict. 38/1 Balanced Steps, the method of arranging the steps of geometrical stairs to increase the going (width) at the small ends of the winders, and to give a better falling line to the handrail. 1918 W. H. Eccles Wireless Telegr. & Teleph. (ed. 2) 489 Balanced Detectors, a term applied to an arrangement of opposed rectifying detectors for reducing the effects of strong Xs in receiving apparatus. 1924 S. R. Roget Dict. Electr. Terms 17/1 Balanced load, a load in a three-wire system which is equally shared by the two sides, or in a polyphase system, where it is equally shared by the various phases. 1924 S. R. Roget Dict. Electr. Terms 17/1 Balanced modulator. 1929 P. Wilson & G. W. Webb Mod. Gramophones ix. 180 There is no permanent magnetic pull on the armature when no signal is passing through the coil. This type is therefore known as a ‘balanced armature’. 1930 Phillips & Tutt Mod. Gas Fitting xi. 341 The ‘Balance’ radiator is so called in that the air inlet and combustion products outlets are made continuous and ‘balanced’. 1933 K. Edgcumbe & F. E. J. Ockenden Industr. Electr. Measuring Instruments xiii. 279 A strictly ‘balanced’ circuit is one in which the currents, voltages, and phase displacements are the same for each phase. 1938 M. E. Fritsch & E. J. Salisbury Plant Form & Funct. v. 49 A mixture of ions in solution in such proportions that they exert no toxic effect is called a balanced solution. 1940 L. Hartshorn Radio Freq. Meas. iii. 48 The potential of one terminal is always as much above that of the screen (earth) as that of the other is below it. This is known as the balanced condition. 1944 Hackh's Chem. Dict. (ed. 3) 96/1 Balanced reaction, a reaction which can be made to proceed in either direction by variation of either temperature, pressure or concentration of the reactants. 1955 Archit. Rev. 117 93/2 Balanced-flue gas heaters are provided in the kitchens and serve the sink, lavatory basin and bath. Draft additions 1993 Computing. Of a binary tree: such that for each node the left and right subtrees are of equal or approximately equal size, as measured by the number of levels or the number of nodes in each. ΘΚΠ society > computing and information technology > data > [adjective] > data structure push-down1959 threaded1960 balanced1962 machine-coded1964 push-up1966 1962 Symposium Symbolic Lang. Data Processing 156 A Balanced Tree is accomplished by filling the levels of the tree to completion, i.e., no new levels are to be initiated as long as there are vacant catenae available in the preceding level. 1973 C. W. Gear Introd. Computer Sci. vii. 285 A balanced tree leads to fewer operations on the average if any item is equally likely to be referenced. 1976 N. Wirth Algorithms plus Data Struct. iv. 195 The rule is expressed as a recursive procedure as part of Program 4.3 which reads the input file and constructs the perfectly balanced tree. 1984 R. L. Kruse Data Struct. & Program Design v. 221 The algorithm..produces a binary search tree that is not always completely balanced. Draft additions January 2010 balanced polymorphism n. Genetics genetic polymorphism that persists at a stable level within a population, being maintained by a selective advantage favouring heterozygotic organisms; an instance of this. ΚΠ 1934 E. B. Ford Mendelism & Evol. (ed. 2) v. 94 It is perhaps possible that such divergence originated as a balanced polymorphism. 1964 Listener 11 June 952/1 Balanced polymorphism is something different... The existence of both sexes maintained indefinitely in roughly equal proportions is one example; the familiar ABO blood group genes provide another excellent example. 2005 C. Tudge Secret Life Trees xii. 312 Thus jack pines have a ‘mixed strategy’: the genes that make their cones so special are clearly of two kinds—some that gear the cone to fire, and some that enable it to respond to sunshine. Geneticists call this a ‘balanced polymorphism’. This entry has not yet been fully updated (first published 1885; most recently modified version published online March 2022). < adj.1592
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