quadrilaterus

Latin

Etymology

New Latin term, first attested in 1560, from quadri- (“four”) + latus (“side, flank”).

Pronunciation

• (Classical Latin) IPA^(key): /kʷa.driˈla.te.rus/, [kʷäd̪rɪˈɫ̪ät̪ɛrʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /kwa.driˈla.te.rus/, [kwäd̪riˈläːt̪erus]

Adjective

quadrilaterus (feminine quadrilatera, neuter quadrilaterum); first/second-declension adjective

1. quadrilateral

Declension

First/second-declension adjective.

Number	Singular				Plural
Case / Gender	Masculine	Feminine	Neuter		Masculine	Feminine	Neuter
Nominative	quadrilaterus	quadrilatera	quadrilaterum		quadrilaterī	quadrilaterae	quadrilatera
Genitive	quadrilaterī	quadrilaterae	quadrilaterī		quadrilaterōrum	quadrilaterārum	quadrilaterōrum
Dative	quadrilaterō		quadrilaterō		quadrilaterīs
Accusative	quadrilaterum	quadrilateram	quadrilaterum		quadrilaterōs	quadrilaterās	quadrilatera
Ablative	quadrilaterō	quadrilaterā	quadrilaterō		quadrilaterīs
Vocative	quadrilatere	quadrilatera	quadrilaterum		quadrilaterī	quadrilaterae	quadrilatera

Descendants

• Catalan: quadrilàter
• English: quadrilateral
• French: quadrilatère
• Galician: cuadrilátero
• Italian: quadrilatero
• Portuguese: quadrilátero
• Spanish: cuadrilátero

References

• “quadrilaterus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• quadrilaterus 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)
• quadrilaterus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.