Usage Note
Rénal is the medical adjective corresponding to rein (kidney). It appears in terms like insuffisance rénale (kidney failure) and calcul rénal (kidney stone). The feminine form is rénale, and the plural forms are rénaux / rénales. It is strictly a formal medical register term; everyday speech prefers du rein.
Examples
"Il souffre d'une insuffisance rénale chronique."
Natural Translation
He suffers from chronic kidney failure.

Free starter pack
Building your French vocabulary?
Get the 100 most common French words as a free PDF — one email, no spam.
Related Words
Explore French by topic
FrenchNow
6 min read