What does pternix mean in Latin?

pternix, a noun, means “The straight stem of a plant”.

What is the genitive of pternix?

The genitive singular is pternicis. pternix is feminine, third declension.

In classical Latin, [ˈptɛr.nɪks]; in ecclesiastical (church) Latin, [ˈptɛr.niks].

noun · femininethird declension

pternix f (genitive pternicis)

Classical[ˈptɛr.nɪks]Ecclesiastical[ˈptɛr.niks]

pternix, ĭcis, f., = πτέρνιξ,

I. the straight stem of a plant, Plin. 21, 16, 57, § 97.

Borrowed from Ancient Greek πτέρνιξ (ptérnix).