English
magnetoactive
From magneto- + active.
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
adj Showing any of several forms of magnetic activity
Language periods are conventional ranges, not dates for this word.
Etymograph / magnetoactive