rhombus

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Pronunciation

• (British) IPA: /ˈɹɒmbəs/
• (America) IPA: /ˈɹɑːmbəs/

Noun

rhombus (plural rhombi)

1. (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 ).
2. In early Greek religion, an instrument whirled on the end of a string similar to a bullroarer.
3. (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, Sir Thomas Herbert, 1st Baronet, 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 [...].

4. (zoology, archaic) Snails, now in genus Conus or family Conidae.

Synonyms

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

Translations

• French: losange, rhombus
• German: Rhombus, Raute
• Italian: rombo
• Portuguese: losango
• Russian: ромб
• Spanish: rombo

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