endotracheal

Etymology tree
Proto-Indo-European *h₁n̥dóm
Proto-Hellenic *éndon
Ancient Greek ἔνδον (éndon)der.
English endo-
Proto-Indo-European *dʰreh₂gʰ-
Proto-Indo-European *dʰréh₂gʰ-us
Proto-Hellenic *tʰrākʰús
Ancient Greek τρᾱχεῖᾰ (trākheîă)bor.
Late Latin trāchīa
Medieval Latin trāchēader.
Middle English
English trachea
Proto-Indo-European *h₂el-der.?
Proto-Italic *-ālis
Latin -ālisbor.
Old French -albor.
▲
Latin -ālis
Old French -elbor.
▲
Latin -ālisbor.
Middle English -al
English -al
English tracheal
English endotracheal
From endo- + tracheal.