hydrostaticadj.

/hʌɪdrəʊˈstatɪk/

Etymology: Ultimately < Greek ὑδρο- water + στατικός making to stand, balancing, weighing (see static n. and adj.); but probably proximately < Greek ὑδροστάτης a hydrostatic balance, in medieval Greek a fire-engine, which probably originated modern Latin hydrostaticus, French hydrostatique.

1. Relating to the equilibrium of liquids, and the pressure exerted by liquids at rest; belonging to hydrostatics.

ΘΚΠ

the world > matter > physics > mechanics > dynamics > statics > [adjective] > relating to hydrostatics

hydrostatical1666

hydrostatic1671

1671 R. Bohun Disc. Wind 258 Illustrated from Hydrostatique experiments.

1729 S. Switzer Introd. Gen. Syst. Hydrostaticks & Hydraulicks 207 Hydrostatick Instruments.

1860 G. Hartwig tr. Sea & its Living Wonders i. 16 The mixture of the water of rivers with that of the sea presents some hydrostatic phenomena which it is curious enough to observe.

1871 B. Stewart Heat (ed. 2) §23 The hydrostatic pressure of the column of mercury.

2. Used of or in reference to certain aquatic animals having air-bladders which enable them to float on the surface of the water.

ΘΚΠ

the world > animals > animal body > general parts > [adjective] > adapted for swimming or floating > animal having air-bladder

hydrostatic1840

1840 F. D. Bennett Narr. Whaling Voy. II. 295 One of the many hydrostatic univalve shells which float upon the surface of the ocean.

1840 F. D. Bennett Narr. Whaling Voy. II. 317 Air, in the form of small bubbles..fully accounts for the hydrostatic power the animal possesses.

1870 G. Rolleston Forms Animal Life Introd. 75 The air-bladder of an ordinary Teleostean Fish..is..all but exclusively hydrostatic.

Compounds

C1.

hydrostatic arch n. see quot.

ΚΠ

1858 W. J. M. Rankine Man. Appl. Mech. §183 The Hydrostatic Arch is a linear arch suited for sustaining normal pressure at each point proportional, like that of a liquid in repose, to the depth below a given horizontal plane.

hydrostatic paradox n. the principle (depending on the law of uniform pressure of liquids) that any quantity of a perfect liquid, however small, may be made to balance any quantity (or any weight), however great. (Cf. hydrostatic bellows n. at Compounds 2.)

ΚΠ

1797 Jrnl. Nat. Philos. Apr. (heading) A New Press operating by the Action of Water, on the Principle of the Hydrostatic Paradox. Invented by Joseph Bramah, Engineer.

C2. Used to designate various instruments and appliances involving the pressure of water or other liquid as a source of power or otherwise.

hydrostatic balance n. a balance for ascertaining the specific gravity of substances by weighing them in water.

ΘΚΠ

the world > matter > chemistry > equipment or apparatus > [noun] > balances

aquapoise1688

hydrostatic balance1755

gravity balance1900

1755 J. Shebbeare Lydia (1769) II. 87 It was impossible by the nicest hydrostatic-balance to decide which had the preference in her mind.

1799 tr. Laboratory (ed. 6) I. ii. 77 It [sc. silver] loses in the hydrostatic balance about an eleventh part of its weight.

hydrostatic bed n. a bed consisting of an india-rubber bag filled with water; a water-bed.

ΘΚΠ

society > inhabiting and dwelling > inhabited place > a building > furniture and fittings > bed > types of bed > [noun] > water-bed > for an invalid

waterbed1832

hydrostatic bed1833

1833 N. Arnott Elements Physics (ed. 5) I. 589 In the hydrostatic bed, there is no tense surface or web at all: the patient is floating upon the water.

hydrostatic bellows n. a contrivance for illustrating the law of uniform distribution of pressure in liquids; it consists of a bellows-like chamber, into which water, being introduced by a narrow vertical tube, supports a weight placed on the upper board of the bellows, the upward pressure on this being that of the column of water in the tube multiplied in proportion to the area of the bellows.

ΚΠ

1822 T. Webster Imison's Elem. Sci. & Art (new ed.) I. 111 The hydrostatic bellows is perhaps the best machine for demonstrating the upward pressure of fluids.

hydrostatic joint n. a joint used in large water-mains, in which a ring of sheet-lead is made fast by the pressure of a liquid (usually tar) in an annular space within the bell of the pipe.

hydrostatic press n. a machine (having various practical applications) in which the pressure of a body of water (produced either by the weight of the water itself, or by a piston or other mechanical means) is transmitted from a cylinder of small sectional area to one of greater, and thus multiplied in accordance with the law of hydrostatic pressure. Also called hydraulic press or Bramah's press.

ΘΚΠ

society > occupation and work > equipment > equipment for altering dimensions > [noun] > press > hydraulic

hydrostatic press1797

water press1802

Bramah's press1846

hydraulic press1851

wheel-press1875

1797 Jrnl. Nat. Philos. Apr. (heading) Description of a New Hydrostatic Press [Bramah's].

hydrostatic van n.

ΚΠ

1898 Daily News 5 Sept. 2/2 The use of ‘hydrostatic vans’ is now a luxury unknown in this arid portion of the town [i.e. East end of London during the ‘Water-famine’].

hydrostatic weighing-machine n. a machine of similar construction to the hydrostatic bellows, in which the weight of a body is indicated by the height of the column of water which supports it.

This entry has not yet been fully updated (first published 1899; most recently modified version published online December 2021).

单词	hydrostatic
释义	hydrostaticadj. /hʌɪdrəʊˈstatɪk/ Etymology: Ultimately < Greek ὑδρο- water + στατικός making to stand, balancing, weighing (see static n. and adj.); but probably proximately < Greek ὑδροστάτης a hydrostatic balance, in medieval Greek a fire-engine, which probably originated modern Latin hydrostaticus, French hydrostatique. 1. Relating to the equilibrium of liquids, and the pressure exerted by liquids at rest; belonging to hydrostatics. ΘΚΠ the world > matter > physics > mechanics > dynamics > statics > [adjective] > relating to hydrostatics hydrostatical1666 hydrostatic1671 1671 R. Bohun Disc. Wind 258 Illustrated from Hydrostatique experiments. 1729 S. Switzer Introd. Gen. Syst. Hydrostaticks & Hydraulicks 207 Hydrostatick Instruments. 1860 G. Hartwig tr. Sea & its Living Wonders i. 16 The mixture of the water of rivers with that of the sea presents some hydrostatic phenomena which it is curious enough to observe. 1871 B. Stewart Heat (ed. 2) §23 The hydrostatic pressure of the column of mercury. 2. Used of or in reference to certain aquatic animals having air-bladders which enable them to float on the surface of the water. ΘΚΠ the world > animals > animal body > general parts > [adjective] > adapted for swimming or floating > animal having air-bladder hydrostatic1840 1840 F. D. Bennett Narr. Whaling Voy. II. 295 One of the many hydrostatic univalve shells which float upon the surface of the ocean. 1840 F. D. Bennett Narr. Whaling Voy. II. 317 Air, in the form of small bubbles..fully accounts for the hydrostatic power the animal possesses. 1870 G. Rolleston Forms Animal Life Introd. 75 The air-bladder of an ordinary Teleostean Fish..is..all but exclusively hydrostatic. Compounds C1. hydrostatic arch n. see quot. ΚΠ 1858 W. J. M. Rankine Man. Appl. Mech. §183 The Hydrostatic Arch is a linear arch suited for sustaining normal pressure at each point proportional, like that of a liquid in repose, to the depth below a given horizontal plane. hydrostatic paradox n. the principle (depending on the law of uniform pressure of liquids) that any quantity of a perfect liquid, however small, may be made to balance any quantity (or any weight), however great. (Cf. hydrostatic bellows n. at Compounds 2.) ΚΠ 1797 Jrnl. Nat. Philos. Apr. (heading) A New Press operating by the Action of Water, on the Principle of the Hydrostatic Paradox. Invented by Joseph Bramah, Engineer. C2. Used to designate various instruments and appliances involving the pressure of water or other liquid as a source of power or otherwise. hydrostatic balance n. a balance for ascertaining the specific gravity of substances by weighing them in water. ΘΚΠ the world > matter > chemistry > equipment or apparatus > [noun] > balances aquapoise1688 hydrostatic balance1755 gravity balance1900 1755 J. Shebbeare Lydia (1769) II. 87 It was impossible by the nicest hydrostatic-balance to decide which had the preference in her mind. 1799 tr. Laboratory (ed. 6) I. ii. 77 It [sc. silver] loses in the hydrostatic balance about an eleventh part of its weight. hydrostatic bed n. a bed consisting of an india-rubber bag filled with water; a water-bed. ΘΚΠ society > inhabiting and dwelling > inhabited place > a building > furniture and fittings > bed > types of bed > [noun] > water-bed > for an invalid waterbed1832 hydrostatic bed1833 1833 N. Arnott Elements Physics (ed. 5) I. 589 In the hydrostatic bed, there is no tense surface or web at all: the patient is floating upon the water. hydrostatic bellows n. a contrivance for illustrating the law of uniform distribution of pressure in liquids; it consists of a bellows-like chamber, into which water, being introduced by a narrow vertical tube, supports a weight placed on the upper board of the bellows, the upward pressure on this being that of the column of water in the tube multiplied in proportion to the area of the bellows. ΚΠ 1822 T. Webster Imison's Elem. Sci. & Art (new ed.) I. 111 The hydrostatic bellows is perhaps the best machine for demonstrating the upward pressure of fluids. hydrostatic joint n. a joint used in large water-mains, in which a ring of sheet-lead is made fast by the pressure of a liquid (usually tar) in an annular space within the bell of the pipe. hydrostatic press n. a machine (having various practical applications) in which the pressure of a body of water (produced either by the weight of the water itself, or by a piston or other mechanical means) is transmitted from a cylinder of small sectional area to one of greater, and thus multiplied in accordance with the law of hydrostatic pressure. Also called hydraulic press or Bramah's press. ΘΚΠ society > occupation and work > equipment > equipment for altering dimensions > [noun] > press > hydraulic hydrostatic press1797 water press1802 Bramah's press1846 hydraulic press1851 wheel-press1875 1797 Jrnl. Nat. Philos. Apr. (heading) Description of a New Hydrostatic Press [Bramah's]. hydrostatic van n. ΚΠ 1898 Daily News 5 Sept. 2/2 The use of ‘hydrostatic vans’ is now a luxury unknown in this arid portion of the town [i.e. East end of London during the ‘Water-famine’]. hydrostatic weighing-machine n. a machine of similar construction to the hydrostatic bellows, in which the weight of a body is indicated by the height of the column of water which supports it. This entry has not yet been fully updated (first published 1899; most recently modified version published online December 2021). < adj.1671
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