ˌməskyəˈla(a)rə̇s noun
( -es )
Etymology: New Latin, from muscul- + -aris -ar
1. : the smooth muscular layer of the wall of various more or less contractile organs (as the bladder) — called also muscularis propria
2. : the thin layer of smooth muscle that forms part of a mucous membrane — called also muscularis mucosae