English
labiomesially
From labio- + mesially.
Proto-Indo-European *leb- ‘to hang down loosely’
Proto-Indo-European *l̥b-yóm
Proto-Italic *labjom
Latin labium ‘a lip’
English labio-
Today it means
adv In a labiomesial manner or direction
Language periods are conventional ranges, not dates for this word.
Etymograph / labiomesially