Noun

(en noun)

A flexible enclosing or separating tissue forming a plane or film and separating two environments (usually in a plant or animal).

A mechanical, thin, flat flexible part that can deform or vibrate when excited by an external force.

A flexible or semi-flexible covering or waterproofing whose primary function is to exclude water.

Noun

(serosae)

A membrane which lines an internal cavity to protect the contents and which secretes serum.

* {{quote-book, 1955, title=Bulletin de l'Organisation mondiale de la santé, author=

, passage=Like the serous membranes of dehydrated cholera victims in general, the serosae of the small intestines in particular are often covered by a sticky and slimy coat,}}

*