English

muscular

Late 17th century; from muscle (Latin mūsculus) + -ar.

Formed from muscle + -ar

Proto-Indo-European *múHs ‘mouse’

…

Latin mūs ‘mouse’

Latin mūsculus ‘a muscle’

Middle French muscle

Middle English muscle

Today it means

adj Of, relating to, or connected with muscles.

Language periods are conventional ranges, not dates for this word.

Etymograph / muscular