'Basement membrane' definitions:
Definition of 'Basement membrane'
From: GCIDE
- Basement \Base"ment\ (b[=a]sment), n. [F. soubassement. Of uncertain origin. Cf. Base, a., Bastion.] (Arch.) The outer wall of the ground story of a building, or of a part of that story, when treated as a distinct substructure. (See Base, n., 3 (a) .) Hence: The rooms of a ground floor, collectively. [1913 Webster]
- Basement membrane (Anat.), a delicate membrane composed of a single layer of flat cells, forming the substratum upon which, in many organs, the epithelioid cells are disposed. [1913 Webster]