English
magistratical
From magistrate + -ical.
A compound of magistrate + -ical
Proto-Italic *magisteros ‘bigger, greater’
Latin magister ‘master, chief, head, superior, director,…’
Latin magistrātus ‘a magistrate, official’
Middle English magistrat
English magistrate
Today it means
adj Of, pertaining to, or proceeding from, a magistrate; having the authority of a magistrate.
Language periods are conventional ranges, not dates for this word.
Etymograph / magistratical