quadrus

Latin

Etymology

Post-classically attested, thus perhaps a back-formation from quadrō. See also quattuor, quārtus.

Pronunciation

• (Classical Latin) IPA^(key): /ˈkʷa.drus/, [ˈkʷäd̪rʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈkwa.drus/, [ˈkwäːd̪rus]

Adjective

quadrus (feminine quadra, neuter quadrum); first/second-declension adjective

1. square

Declension

First/second-declension adjective.

Number	Singular				Plural
Case / Gender	Masculine	Feminine	Neuter		Masculine	Feminine	Neuter
Nominative	quadrus	quadra	quadrum		quadrī	quadrae	quadra
Genitive	quadrī	quadrae	quadrī		quadrōrum	quadrārum	quadrōrum
Dative	quadrō		quadrō		quadrīs
Accusative	quadrum	quadram	quadrum		quadrōs	quadrās	quadra
Ablative	quadrō	quadrā	quadrō		quadrīs
Vocative	quadre	quadra	quadrum		quadrī	quadrae	quadra

Derived terms

• quadrō

Descendants

• Dalmatian: cadrial
• English: square
• French: carreau, équerre
• Italian: squadra, quadro, quadrello
• Norman: êtchèrre

• Old French: esquarre, quarel, querre
• Portuguese: quadro, quadrelo
• Spanish: cuadro, cuadrillo
• Venetian: quadro, quarel

References

• “quadrus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• quadrus 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)
• quadrus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.
• Sihler, Andrew L. (1995) New Comparative Grammar of Greek and Latin, Oxford, New York: Oxford University Press, →ISBN
• De Vaan, Michiel (2008) “quattuor”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, →ISBN, page 505