from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The often thick or hard outer coat of a seed.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. seed coat
- n. The external calciferous shell, or endoskeleton, of an echinoderm; the test.
from The Century Dictionary and Cyclopedia
- n. In zoology, a test.
- n. In botany, the outer integument or coat of a seed: it is usually hard and brittle, whence the name, which answers to seed-shell. See seed, 1. Also test, spermoderm, and episperm.
- n. [capitalized] A name of the star Vega.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. protective outer layer of seeds of flowering plants
Latin, shell.(American Heritage® Dictionary of the English Language, Fourth Edition)