'Membranous' definitions:

Definition of 'membranous'

From: WordNet
adjective
Relating to or made of or similar to a membrane; "membranous lining"
adjective
Characterized by formation of a membrane (or something resembling a membrane); "membranous gastritis" [syn: membranous, membrane-forming]

Definition of 'Membranous'

From: GCIDE
  • Membranous \Mem"bra*nous\, a. [Cf. F. membraneux.]
  • 1. Pertaining to, consisting of, or resembling, membrane; as, a membranous covering or lining. [1913 Webster]
  • 2. (Bot.) Membranaceous. [1913 Webster]
  • Membranous croup (Med.), true croup. See Croup. [1913 Webster]