Definition of ratio existendi in English:

ratio existendi

Pronunciation /ˈreɪʃɪəʊ ˌɛɡzɪˈstɛndʌɪ/ /ˈrɑːtɪəʊ ˌɛɡzɪˈstɛndi/

noun

Philosophy

Origin

Mid 19th century; earliest use found in Shadworth Hollway Hodgson (1832–1912), philosopher. From post-classical Latin ratio existendi from classical Latin ratiō + existendī, genitive of the gerund of existere.