English
actimetry
From active + -metry.
Formed from active + -metry
Proto-Indo-European *h₂éǵeti ‘to be driving’
Latin agō ‘to do, to act’
Latin āctīvus
Old French actif
Middle English actyf ‘active’
English active
Today it means
noun The measurement of people's activity / rest cycles
Language periods are conventional ranges, not dates for this word.
Etymograph / actimetry