rhombus

From Latin rhombus, from Ancient Greek ῥόμβος (rhómbos, “rhombus, spinning top”), from ῥέμβω (rhémbō, “I turn around”).

• (UK) IPA^(key): /ˈɹɒmbəs/
• (US) IPA^(key): /ˈɹɑːmbəs/

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rhombus (plural rhombi or rhombuses)

1. (zoology, now rare) Any of several flatfishes, including the brill and turbot, once considered part of the genus Rhombus, now in Scophthalmus. [from 16th c.]
   • 1638, Thomas Herbert, Some Yeares Travels, I:

     the greedy Tuberon or Shark arm'd with a double row of venemous teeth pursues them, directed by a little Rhombus, Musculus or pilot-fish that scuds to and fro to bring intelligence [...].

2. (zoology, archaic) Snails, now in genus Conus or family Conidae.
3. (geometry) A parallelogram having all sides of equal length. [from 16th c.]
   1. The rhombus diamond, as one of the suits seen in a deck of playing cards ( or ).

• (geometry): diamond (not in technical use), lozenge (if not square), rhomb

• rhombus star

• rhombus at OneLook Dictionary Search
• rhombus in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

From Ancient Greek ῥόμβος (rhómbos, “rhombus, spinning top”), from ῥέμβω (rhémbō, “I turn around”).

• (Classical) IPA^(key): /ˈrom.bus/, [ˈrɔm.bʊs]

rhombus m (genitive rhombī); second declension

1. rhombus (geometry)
2. flatfish

Second declension.

• rhombus in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• rhombus in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• rhombus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• rhombus in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
• rhombus in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
• rhombus in William Smith et al., editor (1890) A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin