The story
- Proto-Indo-European*upó
- Ancient Greekῠ̔πό (hŭpó)
- Ancient Greekῠ̔πο- (hŭpo-)
- Proto-Hellenic*glṓt͏̌t͏̌ā
- Ancient Greekγλῶσσᾰ (glôssă)
- Ancient Greekῠ̔πόγλωσσος (hŭpóglōssos)
- New Latinhypoglōssus
- Proto-Indo-European*h₂el-
- Proto-Indo-European*h₂élisder.?
- English todayhypoglossal
From New Latin hypoglōssus + -al, from Ancient Greek ῠ̔πόγλωσσος (hŭpóglōssos, “under the tongue”), from ῠ̔πο- (hŭpo-, “under, hypo-”) + γλῶσσᾰ (glôssă, “tongue”) + -ος (-os, adjectival suffix); equivalent to hypo- + glossal.
Etymology from Wiktionary, CC BY-SA 4.0.