passerine

Origin

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 or pertaining to’). Adjective sense 2 is borrowed from New Latin passerinus (“bird species”) + English -ine. Passerinus is derived from Latin passerīnus (“of or fit for sparrows”), from passer (“sparrow”) (see above) + -īnus (suffix meaning ‘of or pertaining to’). The noun is borrowed from New Latin Passerinae (“former order of birds”), a calque of French passereaux, 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). Cognates * French passerin (“sparrowlike”) (obsolete), Provençal French passerine (“passerine whitethroat, a bird from order Passeriformes”)