from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of various echinoderms of the class Echinoidea, having a soft body enclosed in a rounded, radially symmetrical, calcareous skeleton covered with long spines.
from The Century Dictionary.
- noun An echinoid; any member of the Echinoidea; a sea-egg or seahedgehog.
from the GNU version of the Collaborative International Dictionary of English.
- (Zoöl.) Any one of numerous species of echinoderms of the order Echinoidea.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun Any of many
marine echinoderms, of the class Echinoidea, commonly found in shallow water, having a complex chewingstructure named Aristotle's lantern
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun shallow-water echinoderms having soft bodies enclosed in thin spiny globular shells
from Wiktionary, Creative Commons Attribution/Share-Alike License
sea + urchin (meaning hedgehog), due to the similarity in appearance to the hedgehog.
Sorry, no example sentences found.