English

labiodorsal

From labio- + dorsal.

Proto-Indo-European *leb- ‘to hang down loosely’

Proto-Indo-European *l̥b-yóm

Proto-Italic *labjom

Latin labium ‘a lip’

Proto-Italic *dorsom

Latin dorsum ‘the back’

Medieval Latin dorsālis ‘of or relating to the back’

Middle English dorsal/dorsale

Today it means

adj labial and dorsal

Language periods are conventional ranges, not dates for this word.

Etymograph / labiodorsal