出典:Wiktionary
Adjective sense 1 is borrowed from New Latin Passer (“bird genus”) (from Latin passer (“sparrow”), ultimately from Proto-Indo-European *peth₂- (“to spread out; to fly (in the sense of spreading out wings)”)) + English -ine (suffix meaning ‘of または pertaining to’).[1]
Adjective sense 2 is borrowed from New Latin passerinus (“bird species”) + English -ine. Passerinus is derived from Latin passerīnus (“of または fit for sparrows”), from passer (“sparrow”) (see above) + -īnus (suffix meaning ‘of または pertaining to’).[1]
The noun is borrowed from New Latin Passerinae (“former order of birds”), a calque of French passereaux,[1] the plural of passereau (“sparrow; passerine (bird of the order Passeriformes)”), from Latin passer (“sparrow”) (see above) + -eau (suffix forming diminutive masculine nouns, specifically the names of young animals).
passerine (not comparable)
passerine (複数形 passerines)