from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An enclosing membrane or layer of tissue.
from The Century Dictionary and Cyclopedia
- n. Same as tunic.
- n. One of the layers of the choroid coat of the eye.
- n. Specifically, the membrane lining the bony labyrinth of the ear; the walls of the membranous labyrinth.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an enveloping or covering membrane or layer of body tissue
Latin, tunic; see tunic.(American Heritage® Dictionary of the English Language, Fourth Edition)