from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A spicule or similar needlelike structure, such as a spine of an echinoderm or a copulatory organ in a nematode.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A thrusting javelin used by Romans that replaced the pilum in the late 3rd century.
- n. A sharp, pointed crystal, especially of ice.
- n. A sharp, needle-like structure, especially those making up the skeleton of a sponge.
- n. A small radial emission of gas seen in the chromosphere and corona of the sun.
from the GNU version of the Collaborative International Dictionary of English
- n. Same as spicule.
from The Century Dictionary and Cyclopedia
- n. In zoology, a spicula or spicule.
- n. A needle-shaped splinter of bone.
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
Rossiter in this autumn of 1917 was extremely interested in certain crucial experiments he was making with spiculum in sponge-cells; with scleroblasts, "mason-cells," osteoblasts, and "consciousness" in bone-cells.
Stream of emotional, creative impulse strong enough and hot enough to thaw the classical icebergs till not a floating spiculum of them is left.
After sundry caresses between the two parties, during which they exhibit an animation quite foreign to them at other times, one of the snails unfolds from the right side of its neck, where the generative orifice is situated, a wide sacculus, which, by becoming everted, displays a sharp dagger-like spiculum, or dart, attached to its walls.
Refining on the more delicate sound of stipes, the Latins got 'stipula,' the thin stem of straw: which rustles and ripples daintily in verse, associated with spica and spiculum, used of the sharp pointed ear of corn, and its fine processes of fairy shafts.