muscularized
/ˈmʌskjʊlərʌɪzd/(also muscularised) Chiefly Zoology and Pathology
adjective
Endowed with muscle; specifically (of an arteriole or artery) having smooth muscle in the tunica media, especially as a pathological feature.
Origin
Late 19th century; earliest use found in Godey's Magazine. Either from muscularize + -ed or independently from muscular + -ized.