What is "profectitious"

Profectitious \Pro`fec*ti"tious\, a. [L. profectitius, fr. proficisci to set out, proceed.] Proceeding from, as from a parent; derived, as from an ancestor. [R.]

The threefold distinction of profectitious, adventitious, and professional was ascertained.
--Gibbon.

a. Proceeding from, or as if from, a parent; derived, as from an ancestor.