1650s, "advancement" (obs.); 1868 in the sense "carrying of the final letter of a word into the next one" (e.g. newt), from Late Latin provectionem (nominative provectio) "advancement," noun of action from past participle stem provehere "to carry forward," from pro- "toward, ahead" (see pro-) + vehere "to carry" (see vehicle).
- provascular tissue,
- prove out,