muscularis mucosae
/ˌmʌskjʊˈlɑːrɪs mjuːˈkəʊziː/ /ˌmʌskjʊˈlɑːrɪs mjuːˈkəʊzʌɪ/(also muscularis mucosa) Histology
noun
A thin layer of smooth muscle fibres at the base of a mucous membrane.
Origin
Mid 19th century; earliest use found in Quain's Elements of Anatomy. From scientific Latin muscularis mucosae from muscularis + mucosae, genitive of mucosa, use as noun of classical Latin mūcōsus.