cubus

Latin

Etymology

From Ancient Greek κύβος (kúbos).

Pronunciation

• (Classical) IPA^(key): /ˈku.bus/, [ˈkʊbʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈku.bus/, [ˈkuːbus]

Noun

cubus m (genitive cubī); second declension

1. A mass, quantity
2. (geometry) A cube

Declension

Second-declension noun.

Case	Singular	Plural
Nominative	cubus	cubī
Genitive	cubī	cubōrum
Dative	cubō	cubīs
Accusative	cubum	cubōs
Ablative	cubō	cubīs
Vocative	cube	cubī

Descendants

• English: cube
• French: cube
  • → Romanian: cub
  • → Turkish: küp
• Galician: cubo
• German: Kubus
• Italian: cubo
• Portuguese: cubo
• Russian: куб m (kub)
• Sicilian: cubbu
• Spanish: cubo

References

• “cubus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “cubus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• cubus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• “cubus”, in Harry Thurston Peck, editor (1898), Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
• “cubus”, in William Smith et al., editor (1890), A Dictionary of Greek and Roman Antiquities, London: William Wayte. G. E. Marindin
• “cube”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC.

Old Irish

Etymology

com- (“mutual, equal”) +‎ fius (“knowledge”). Calque of Latin conscientia.

Pronunciation

• IPA^(key): [ˈkuvus]

Noun

cubus n

1. conscience

   Synonym: cocubus

   Antonym: écubus

Inflection

Neuter u-stem
	Singular	Dual	Plural
Nominative	cubusN	cubusL	cuibseL, cuibsea
Vocative	cubusN	cubusL	cubus
Accusative	cubusN	cubusL	cubus
Genitive	cuibseoH, cuibseaH	cuibseoN, cuibseaN	cuibseN
Dative	cubusL	cuibsib	cuibsib
Initial mutations of a following adjective: H = triggers aspiration L = triggers lenition N = triggers nasalization

Derived terms

• cuibsech (“conscientious, scrupulous, upright”)

Descendants

• Irish: cúis (“conscience”)

Mutation

Old Irish mutation
Radical	Lenition	Nasalization
cubus	chubus	cubus pronounced with /ɡ(ʲ)-/
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading

• G. Toner, M. Ní Mhaonaigh, S. Arbuthnot, D. Wodtko, M.-L. Theuerkauf, editors (2019), “1 cubus”, in eDIL: Electronic Dictionary of the Irish Language