English
proprotease
From pro- + protease.
Proto-Indo-European *pér ‘through’
Proto-Indo-European *pró ‘forwards, before’
Proto-Italic *prō ‘in front of, before’
Latin prō ‘in favor of, on behalf of’
English pro-
Today it means
noun Any proenzyme that is converted into a protease
Language periods are conventional ranges, not dates for this word.
Etymograph / proprotease