rhombusn.

Brit.

/ˈrɒmbəs/, U.S.

/ˈrɑmbəs/

Inflections: Plural rhombi, rhombuses.

Forms: 1500s rumbus, 1500s–1700s rombus, 1500s– rhombus.

Origin: A borrowing from Latin. Etymons: Latin rhombus, Greek ῥόμβος, ῥέμβεσθαι.

Etymology: < classical Latin rhombus instrument (usually lozenge-shaped) whirled on a string to produce a whirring noise, lozenge-shaped flatfish, in post-classical Latin also four-sided figure (6th cent.) < ancient Greek ῥόμβος instrument (usually lozenge-shaped) whirled on a string to produce a whirring noise, four-sided figure, lozenge-shaped flatfish < an ablaut variant of the base of Hellenistic Greek ῥέμβεσθαι to roll about, further etymology unknown. Compare rhomb n.

1. Chiefly Zoology.

a. Any of various flatfishes formerly assigned to a genus Rhombus, including the turbot ( Psetta maxima) and the brill ( Scophthalmus rhombus); (in form Rhombus) the genus itself. Now rare.Published as a genus name in J. J. Walbaum Petri Artedi sueci genera piscium (1792), but regarded as invalid because of the use of Rhombus by da Costa 1776 (see note at sense 1b).

ΘΚΠ

the world > animals > fish > superorder Acanthopterygii (spiny fins) > order Perciformes (perches) > order Pleuronectiformes (flat-fish) > [noun] > family Scophthalmidae (turbot) > genus or member of Scophthalmus

rhombus?1527

?1527 L. Andrewe tr. Noble Lyfe Bestes sig. tii^v Rumbus is a great fisshe stronge & bolde.

1594 T. Blundeville Exercises f. 129^v There is another called rombus, that is to say a Turbut, in shape like to Diamant.

1684 T. Creech tr. Horace Satyrs ii. ii, in tr. Horace Odes, Satyrs, & Epist. (new ed.) 426 Let their Rhombus stink e're brought to shore.

1753 Chambers's Cycl. Suppl. Rhombo, the name of a peculiar fish of the rhombus, or turbot kind.

1850 J. von Hammer tr. Evliya Çelebi Narr. Trav. II. 48 The fish which are worthy of mention are Lorek-bálighí, Kefál-bálighí (Cephalus), the Kálkan-bálighí (Rhombus), which if eaten by women renders them prolific.

1876 P. J. Van Beneden Animal Parasites & Messmates 31 De Kay found one in a Rhombus in the United States.

1923 Philos. Trans. (Royal Soc.) B. 211 91 Sections of Rhombus reveal that the air-bladder is also placed asymmetrically in this type.

†b. Any of various gastropod molluscs whose shells are roughly cylindrical to biconic in shape, including species now known as olives (family Olividae), volutes ( Volutidae), mitres ( Mitridae), and rollers (juvenile Strombus). Cf. rhomb-shell n. at rhomb n. Compounds 2. Obsolete.Used as a genus name by da Costa (in the source quoted in quot. 1776), but not now recognized as valid.

ΘΚΠ

the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [noun] > superorder Branchifera > order Prosobranchiata > section Siphonostomata > member of family Olividae > shell of

rhombus1712

olive shell1882

1712 Philos. Trans. 1710–12 (Royal Soc.) 27 350 Here is also figured from the same hand a neat Rhombus, spotted with black and white, call'd therefore by some the Leopard Shell.

1755 Universal Mag. 16 Apr. 153/2 The buccinums, the cornets, and the cylinders, or, as they are generally, though improperly, called, the rhombi.

1776 E. M. da Costa Elements Conchol. 227 From which [rhombic shape]..I have allotted them the name of Rhombi... The Latin word Rhombus..not only signifies a lozange or rhombic figure, but also a reel, a spinning-wheel, a whirl, or other rolling instrument; and it is from this last similitude the Olives and such-like Shells have been called Rhombi by the elder authors.

1797 Encycl. Brit. XVII. 353/1 Panama is famous for the cylinders or rhombi.

a. Geometry. A plane rectilinear figure having four equal sides and equal opposite angles; spec. one having no right angles, as contrasted with a square; an oblique equilateral parallelogram. Cf. rhomboid n. 1.

ΘΚΠ

the world > space > shape > angularity > specific angular shape > [noun] > quadrilateral > lozenge, diamond, or rhomb

lozenge?a1366

mascle1453

diamond1496

lozenger1527

rhombus?a1560

rhomb1578

romby1592

the world > relative properties > number > geometry > shape or figure > [noun] > two-dimensional > quadrilateral > rhombus

like-side1551

lozenge1551

rhombus?a1560

rhomboid1570

rhomboides1570

rhomb1578

?a1560 L. Digges Geom. Pract.: Pantometria (1571) ii. vi. sig. Miij Admitte ABCD the Rhombus, whose Area I desire.

1567 J. Maplet Greene Forest f. 18 Rhombus, a figure with y^e Mathematicians foure square: hauing the sides equall, the corners crooked.

1671 J. Brown Descr. & Use Trianguler-quadrant 28 Long Squares (or Oblongs) with the two opposite sides equal, or the same crushed together, or not Right-Angled, as the Rombus.

1672 R. Boyle Ess. Origine & Virtues Gems 73 Some [of the planes] were most of kinn to a Rhombus, others to a Rhomboeides.

1797 Encycl. Brit. V. 584/2 A quadrangular prism composed of four rhombi.

1825 ‘J. Nicholson’ Operative Mechanic 688 Find the area of a parallelogram: whether it be a square, a rectangle, a rhombus, or a rhomboid.

1878 H. P. Gurney Crystallogr. 66 A six-sided prism with three rhombuses at each end.

1921 Public School Methods (new ed.) V. 98 If the sides are equal but the angles are not right-angles the figure is a rhombus.

1960 Math. Gaz. 44 46 By drawing lines equal and parallel to the sides of the polygon a dissection into rhombi and triangles is effected.

2001 L. Long Painless Geom. vi. 151 The diagonals of a rhombus bisect the angles of the rhombus.

b. Something shaped like or resembling a rhombus.

ΘΚΠ

the world > space > shape > angularity > specific angular shape > [noun] > quadrilateral > lozenge, diamond, or rhomb > object in shape of

rhombus1612

1612 S. Sturtevant Metallica xiv. 103 The plegnick Rhombus is an Engin of extraordinary..power.

1697 W. Dampier New Voy. around World xviii. 499 6 leagues to the West of Diamond Point, which makes with 3 Angles of a Rhombus, and is low Land.

1790 Coll. Voy. round World V. x. 1731 White mats..with many red stripes, rhombuses, and other figures interwoven on one side.

1846 C. Holtzapffel Turning & Mech. Manip. II. 764 Mosaic works, consisting of groups either of triangles, rhombuses, or of squares.

1909 J. W. Jenkinson Exper. Embryol. 128 Where two sperm-nuclei unite with the egg-nucleus a tetraster is formed, that is four asters united by spindles in a square or rhombus.

1991 J. Barnes Talking it Over xvii. 237 I motor carefully,..past the dusty rhombus which is half village square and half café forecourt.

Compounds

C1.

rhombus-shaped adj.

ΚΠ

1776 J. Lee Introd. Bot. (ed. 3) Explan. Terms 383 Rhombeum, rombus-shaped, an irregular four-sided Figure.

1889 A. E. Haigh Attic Theatre iii. 128 In the centre [of the stage] is a large rhombus-shaped figure, bounded by two strips of marble.

1990 Congenital Anomalies 30 29 A short and delta-shaped or rhombus-shaped middle phalanx of the index finger.

C2.

† rhombus-solid n. Geometry Obsolete rare = rhomb-solid n. at rhomb n. Compounds 2.

ΘΚΠ

the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > solid of revolution > formed from rhomb

rhomb-solid1704

rhombus-solid1795

1795 C. Hutton Math. & Philos. Dict. II. 373/1 Rhombus-Solid.

This entry has been updated (OED Third Edition, June 2010; most recently modified version published online June 2022).

单词	rhombus
释义	rhombusn. Brit. /ˈrɒmbəs/, U.S. /ˈrɑmbəs/ Inflections: Plural rhombi, rhombuses. Forms: 1500s rumbus, 1500s–1700s rombus, 1500s– rhombus. Origin: A borrowing from Latin. Etymons: Latin rhombus, Greek ῥόμβος, ῥέμβεσθαι. Etymology: < classical Latin rhombus instrument (usually lozenge-shaped) whirled on a string to produce a whirring noise, lozenge-shaped flatfish, in post-classical Latin also four-sided figure (6th cent.) < ancient Greek ῥόμβος instrument (usually lozenge-shaped) whirled on a string to produce a whirring noise, four-sided figure, lozenge-shaped flatfish < an ablaut variant of the base of Hellenistic Greek ῥέμβεσθαι to roll about, further etymology unknown. Compare rhomb n. 1. Chiefly Zoology. a. Any of various flatfishes formerly assigned to a genus Rhombus, including the turbot ( Psetta maxima) and the brill ( Scophthalmus rhombus); (in form Rhombus) the genus itself. Now rare.Published as a genus name in J. J. Walbaum Petri Artedi sueci genera piscium (1792), but regarded as invalid because of the use of Rhombus by da Costa 1776 (see note at sense 1b). ΘΚΠ the world > animals > fish > superorder Acanthopterygii (spiny fins) > order Perciformes (perches) > order Pleuronectiformes (flat-fish) > [noun] > family Scophthalmidae (turbot) > genus or member of Scophthalmus rhombus?1527 ?1527 L. Andrewe tr. Noble Lyfe Bestes sig. tii^v Rumbus is a great fisshe stronge & bolde. 1594 T. Blundeville Exercises f. 129^v There is another called rombus, that is to say a Turbut, in shape like to Diamant. 1684 T. Creech tr. Horace Satyrs ii. ii, in tr. Horace Odes, Satyrs, & Epist. (new ed.) 426 Let their Rhombus stink e're brought to shore. 1753 Chambers's Cycl. Suppl. Rhombo, the name of a peculiar fish of the rhombus, or turbot kind. 1850 J. von Hammer tr. Evliya Çelebi Narr. Trav. II. 48 The fish which are worthy of mention are Lorek-bálighí, Kefál-bálighí (Cephalus), the Kálkan-bálighí (Rhombus), which if eaten by women renders them prolific. 1876 P. J. Van Beneden Animal Parasites & Messmates 31 De Kay found one in a Rhombus in the United States. 1923 Philos. Trans. (Royal Soc.) B. 211 91 Sections of Rhombus reveal that the air-bladder is also placed asymmetrically in this type. †b. Any of various gastropod molluscs whose shells are roughly cylindrical to biconic in shape, including species now known as olives (family Olividae), volutes ( Volutidae), mitres ( Mitridae), and rollers (juvenile Strombus). Cf. rhomb-shell n. at rhomb n. Compounds 2. Obsolete.Used as a genus name by da Costa (in the source quoted in quot. 1776), but not now recognized as valid. ΘΚΠ the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > class Gastropoda > [noun] > superorder Branchifera > order Prosobranchiata > section Siphonostomata > member of family Olividae > shell of rhombus1712 olive shell1882 1712 Philos. Trans. 1710–12 (Royal Soc.) 27 350 Here is also figured from the same hand a neat Rhombus, spotted with black and white, call'd therefore by some the Leopard Shell. 1755 Universal Mag. 16 Apr. 153/2 The buccinums, the cornets, and the cylinders, or, as they are generally, though improperly, called, the rhombi. 1776 E. M. da Costa Elements Conchol. 227 From which [rhombic shape]..I have allotted them the name of Rhombi... The Latin word Rhombus..not only signifies a lozange or rhombic figure, but also a reel, a spinning-wheel, a whirl, or other rolling instrument; and it is from this last similitude the Olives and such-like Shells have been called Rhombi by the elder authors. 1797 Encycl. Brit. XVII. 353/1 Panama is famous for the cylinders or rhombi. 2. a. Geometry. A plane rectilinear figure having four equal sides and equal opposite angles; spec. one having no right angles, as contrasted with a square; an oblique equilateral parallelogram. Cf. rhomboid n. 1. ΘΚΠ the world > space > shape > angularity > specific angular shape > [noun] > quadrilateral > lozenge, diamond, or rhomb lozenge?a1366 mascle1453 diamond1496 lozenger1527 rhombus?a1560 rhomb1578 romby1592 the world > relative properties > number > geometry > shape or figure > [noun] > two-dimensional > quadrilateral > rhombus like-side1551 lozenge1551 rhombus?a1560 rhomboid1570 rhomboides1570 rhomb1578 ?a1560 L. Digges Geom. Pract.: Pantometria (1571) ii. vi. sig. Miij Admitte ABCD the Rhombus, whose Area I desire. 1567 J. Maplet Greene Forest f. 18 Rhombus, a figure with y^e Mathematicians foure square: hauing the sides equall, the corners crooked. 1671 J. Brown Descr. & Use Trianguler-quadrant 28 Long Squares (or Oblongs) with the two opposite sides equal, or the same crushed together, or not Right-Angled, as the Rombus. 1672 R. Boyle Ess. Origine & Virtues Gems 73 Some [of the planes] were most of kinn to a Rhombus, others to a Rhomboeides. 1797 Encycl. Brit. V. 584/2 A quadrangular prism composed of four rhombi. 1825 ‘J. Nicholson’ Operative Mechanic 688 Find the area of a parallelogram: whether it be a square, a rectangle, a rhombus, or a rhomboid. 1878 H. P. Gurney Crystallogr. 66 A six-sided prism with three rhombuses at each end. 1921 Public School Methods (new ed.) V. 98 If the sides are equal but the angles are not right-angles the figure is a rhombus. 1960 Math. Gaz. 44 46 By drawing lines equal and parallel to the sides of the polygon a dissection into rhombi and triangles is effected. 2001 L. Long Painless Geom. vi. 151 The diagonals of a rhombus bisect the angles of the rhombus. b. Something shaped like or resembling a rhombus. ΘΚΠ the world > space > shape > angularity > specific angular shape > [noun] > quadrilateral > lozenge, diamond, or rhomb > object in shape of rhombus1612 1612 S. Sturtevant Metallica xiv. 103 The plegnick Rhombus is an Engin of extraordinary..power. 1697 W. Dampier New Voy. around World xviii. 499 6 leagues to the West of Diamond Point, which makes with 3 Angles of a Rhombus, and is low Land. 1790 Coll. Voy. round World V. x. 1731 White mats..with many red stripes, rhombuses, and other figures interwoven on one side. 1846 C. Holtzapffel Turning & Mech. Manip. II. 764 Mosaic works, consisting of groups either of triangles, rhombuses, or of squares. 1909 J. W. Jenkinson Exper. Embryol. 128 Where two sperm-nuclei unite with the egg-nucleus a tetraster is formed, that is four asters united by spindles in a square or rhombus. 1991 J. Barnes Talking it Over xvii. 237 I motor carefully,..past the dusty rhombus which is half village square and half café forecourt. Compounds C1. rhombus-shaped adj. ΚΠ 1776 J. Lee Introd. Bot. (ed. 3) Explan. Terms 383 Rhombeum, rombus-shaped, an irregular four-sided Figure. 1889 A. E. Haigh Attic Theatre iii. 128 In the centre [of the stage] is a large rhombus-shaped figure, bounded by two strips of marble. 1990 Congenital Anomalies 30 29 A short and delta-shaped or rhombus-shaped middle phalanx of the index finger. C2. † rhombus-solid n. Geometry Obsolete rare = rhomb-solid n. at rhomb n. Compounds 2. ΘΚΠ the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > solid of revolution > formed from rhomb rhomb-solid1704 rhombus-solid1795 1795 C. Hutton Math. & Philos. Dict. II. 373/1 Rhombus-Solid. This entry has been updated (OED Third Edition, June 2010; most recently modified version published online June 2022). < n.?1527
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