■ noun
1》 Anatomy & Zoology a pliable sheet-like structure acting as a boundary, lining, or partition in an organism.
2》 a thin pliable sheet of material forming a barrier or lining.
3》 Biology a double layer of lipids and proteins forming the boundary of a cell or organelle.
Derivatives
membranaceous adjective
~ous adjective
membranous adjective
Origin
ME: from L. membrana , from membrum 'limb'.