from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A small needlelike structure or part, such as one of the silicate or calcium carbonate processes supporting the soft tissue of certain invertebrates, especially sponges.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A sharp, needle-like piece
- n. Any of many needle-like crystalline structures that provide skeletal support in marine invertebrates like sponges
- n. A jet of matter ejected from the photosphere of the sun
- n. A small spike of flowers
from the GNU version of the Collaborative International Dictionary of English
- n. A minute, slender granule, or point.
- n. Same as Spicula.
- n. Any small calcareous or siliceous body found in the tissues of various invertebrate animals, especially in sponges and in most Alcyonaria.
from The Century Dictionary and Cyclopedia
- n. A fine-pointed body resembling a needle: as, ice -spicules.
- n. In botany:
- n. A spikelet.
- n. One of the small projections or points on the basidia of hymenomycetous fungi which bear the spores. There are usually four to each basidium. See sterigma.
- n. In zoology, a hard, sharp body like a little spike, straight or curved, rod-like, or branched, or diversiform; a spiculum; a sclere: variously applied, without special reference to size or Shape.
- n. In botany, the empty frustule of a diatom.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. small pointed structure serving as a skeletal element in various marine and freshwater invertebrates e.g. sponges and corals
Latin spīculum; see spiculum.(American Heritage® Dictionary of the English Language, Fourth Edition)