Where does “anteriodorsal” come from?

anteriodorsal (English) comes from English dorsal, from Middle English dorsal, from Medieval Latin dorsalis, from Latin dorsum, from Proto-Italic dorsom.

Ancestry of “anteriodorsal”, step by step

anteriodorsal traces back through two separate lines of ancestry.

via English dorsal

StepLanguageWordMeaning
1EnglishdorsalWith respect to, or concerning the side in which...
2Middle Englishdorsal
3Medieval Latindorsalisof or relating to the back; dorsal; of or...
4Latindorsumback, part of the body between the neck and...
5Proto-Italicdorsom

via English anterio

StepLanguageWordMeaning
1Englishanterio
Every word from Proto-Italic dorsomEvery word from Latin dorsumEvery word from Medieval Latin dorsalis