from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A series of bracts beneath or around a flower or flower cluster.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Conspicuous bract, bract pair or ring of bracts at the base of an inflorescence.
from the GNU version of the Collaborative International Dictionary of English
- n. A whorl or set of bracts around a flower, umbel, or head.
- n. A continuous marginal covering of sporangia, in certain ferns, as in the common brake, or the cup-shaped processes of the filmy ferns.
- n. The peridium or volva of certain fungi. Called also involucrum.
from The Century Dictionary and Cyclopedia
- n. In botany, any collection of bracts round a cluster of flowers.
- n. In anatomy, a membranous envelop. as the pericardium.
- n. 3, In zoology, an involucrum.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a highly conspicuous bract or bract pair or ring of bracts at the base of an inflorescence
French, from Latin involūcrum, wrapper, envelope; see involucrum.(American Heritage® Dictionary of the English Language, Fourth Edition)