Cartesius

Latin

Etymology

Derived from French Descartes, one of several surnames originating in the Reformation period denoting support for the compromise of religious charters for each municipality, indicating adherence to a Catholic or Protestant denomination. Compare also the surname of his mother Brochard and the Germanic variant Broschart, corresponding to pro- (“for, supporting, on behalf of”) +‎ charta (“charter”).

Pronunciation

(Classical) IPA^(key): /karˈte.si.us/, [kärˈt̪ɛs̠iʊs̠]

(Ecclesiastical) IPA^(key): /karˈte.si.us/, [kärˈt̪ɛːs̬ius]

Proper noun

Cartesius m sg (genitive Cartesiī or Cartesī); second declension

a surname famously held by:
1. René Descartes latinized to Renatus Cartesius

Declension

Second-declension noun, singular only.

Case	Singular
Nominative	Cartesius
Genitive	Cartesiī Cartesī¹
Dative	Cartesiō
Accusative	Cartesium
Ablative	Cartesiō
Vocative	Cartesī

¹Found in older Latin (until the Augustan Age).