rhombus
See also: Rhombus
English
![](Images/wiktionary/Rhombus.svg.png.webp)
A pair of rhombi.
![](Images/wiktionary/Scophthalmus_rhombus_Rab_04.JPG.webp)
A rhombus (flatfish)
Etymology
Learned borrowing from Latin rhombus, from Ancient Greek ῥόμβος (rhómbos, “rhombus, spinning top”). Doublet of rhomb and rhumb.
Pronunciation
- (UK) IPA(key): /ˈɹɒmbəs/
- (US) IPA(key): /ˈɹɑːmbəs/
Audio (AUS) (file)
Noun
rhombus (plural rhombi or rhombuses)
- (geometry) A parallelogram having all sides of equal length. [from 16th c.]
- The rhombus diamond, as one of the suits seen in a deck of playing cards (
or
).
- The rhombus diamond, as one of the suits seen in a deck of playing cards (
- In early Greek religion, an instrument whirled on the end of a string similar to a bullroarer.
- 1936, Rollo Ahmed, The Black Art, London: Long, page 58:
- The Greeks also used an instrument called a rhombus, or witches' wheel. As the wheel spun round, it was thought that influence was gained over certain people or circumstances.
-
- (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 [...].
- 1638, Thomas Herbert, Some Yeares Travels, I:
- (zoology, archaic) Snails, now in genus Conus or family Conidae.
Synonyms
- (geometry): diamond (not in technical use), lozenge (if not square), rhomb
Derived terms
- rhombus star
Related terms
- rhombic
- rhomboid
Translations
A parallelogram having all sides of equal length
|
References
- rhombus at OneLook Dictionary Search
- rhombus in The Century Dictionary, New York, N.Y.: The Century Co., 1911
Latin
Alternative forms
- rombus, rumbus (Medieval Latin)
Etymology
From Ancient Greek ῥόμβος (rhómbos, “rhombus, spinning top”), from ῥέμβω (rhémbō, “I turn around”).
Pronunciation
- (Classical) IPA(key): /ˈrom.bus/, [ˈrɔmbʊs̠]
- (Ecclesiastical) IPA(key): /ˈrom.bus/, [ˈrɔmbus]
Noun
rhombus m (genitive rhombī); second declension
- rhombus (geometry)
- flatfish
- a magician's circle
- (Medieval Latin) sturgeon
- Synonym: sturiō
- Hyponym: carrocō
Declension
Second-declension noun.
Case | Singular | Plural |
---|---|---|
Nominative | rhombus | rhombī |
Genitive | rhombī | rhombōrum |
Dative | rhombō | rhombīs |
Accusative | rhombum | rhombōs |
Ablative | rhombō | rhombīs |
Vocative | rhombe | rhombī |
Descendants
- Catalan: rom
- Portuguese: rumo
- Spanish: rumbo, romo
- → English: rhumb
- Sicilian: rummu
- Borrowings
- → Albanian: romb
- → Azerbaijani: romb
- → Catalan: rombe
- → Danish: rombe
- → English: rhombus, rhomb
- → French: rhombe
- → Galician: rombo
- → Georgian: რომბი (rombi)
- → German: Rhombus
- → Estonian: romb
- → Hungarian: rombusz
- → Italian: rombo
- → Latvian: rombs
- → Lithuanian: rombas
- → Macedonian: ромб (romb)
- → Norwegian: rombe
- → Polish: romb
- → Portuguese: rombo
- → Romanian: romb
- → Russian: ромб (romb)
- → Kazakh: ромб (romb)
- → Serbo-Croatian: romb / ромб
- → Slovene: romb
- → Spanish: rombo
- → Swedish: romb
- → Ukrainian: ромб (romb)
References
- “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 with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 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