defectus

Latin

Etymology

Noun use of defectus, the perfect participle of deficio.

Pronunciation

• (Classical Latin) IPA^(key): /deːˈfek.tus/, [d̪eːˈfɛkt̪ʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /deˈfek.tus/, [d̪eˈfɛkt̪us]

Noun

dēfectus m (genitive dēfectūs); fourth declension

1. failure
2. absence
3. weakness, failing, defect
4. defection, revolt

Declension

Fourth-declension noun.

Case	Singular	Plural
Nominative	dēfectus	dēfectūs
Genitive	dēfectūs	dēfectuum
Dative	dēfectuī	dēfectibus
Accusative	dēfectum	dēfectūs
Ablative	dēfectū	dēfectibus
Vocative	dēfectus	dēfectūs

Derived terms

• dēfectibilis (Late Latin)

Descendants

• → Catalan: defecte (learned)
• → English: defect
• → Italian: difetto (semi-learned)
• Middle French: defaicte
  • French: défaite
• → Russian: дефе́кт (defékt)
• → Old Welsh: diffeith
  • Welsh: diffaith

Adjective

dēfectus (feminine dēfecta, neuter dēfectum); first/second-declension adjective

1. tired, worn out
2. faulty, defective

Declension

First/second-declension adjective.

Number	Singular				Plural
Case / Gender	Masculine	Feminine	Neuter		Masculine	Feminine	Neuter
Nominative	dēfectus	dēfecta	dēfectum		dēfectī	dēfectae	dēfecta
Genitive	dēfectī	dēfectae	dēfectī		dēfectōrum	dēfectārum	dēfectōrum
Dative	dēfectō		dēfectō		dēfectīs
Accusative	dēfectum	dēfectam	dēfectum		dēfectōs	dēfectās	dēfecta
Ablative	dēfectō	dēfectā	dēfectō		dēfectīs
Vocative	dēfecte	dēfecta	dēfectum		dēfectī	dēfectae	dēfecta

Related terms

• dēfector
• dēficiō
• dēfectīvus

References

• “defectus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “defectus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• defectus 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)
• defectus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.