English
exertment
From exert + -ment.
Formed from exert + -ment
Proto-Indo-European *ser- ‘to flow’
…
Proto-Italic *serō ‘to join, bind, link’
Latin serō ‘to string together’
Latin exserō ‘to stretch or thrust forth or out’
Latin exsertus ‘stretched or thrust out’
English exert
Today it means
noun exertion
Language periods are conventional ranges, not dates for this word.
Etymograph / exertment