Where does “excortico” come from?

excortico (Late Latin) comes from Latin cortex, from Proto-Indo-European *(s)kort-ek-s.

Ancestry of “excortico”, step by step

StepLanguageWordMeaning
1LatincortexThe bark of a tree; the bark of a cork tree;...
2Proto-Indo-European*(s)kort-ek-s
Every word from Proto-Indo-European *(s)kort-ek-sEvery word from Latin cortex