from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of numerous chiefly marine invertebrates of the phylum Mollusca, typically having a soft unsegmented body, a mantle, and a protective calcareous shell and including the edible shellfish and the snails.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Alternative spelling of mollusc.

from the GNU version of the Collaborative International Dictionary of English

  • n. One of the Mollusca.

from The Century Dictionary and Cyclopedia

  • n. A soft-bodied animal, usually with an external shell; a member of the Mollusca in any sense. See Mollusca.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. invertebrate having a soft unsegmented body usually enclosed in a shell


from The American Heritage® Dictionary of the English Language, 4th Edition

French mollusque, from New Latin Mollusca, phylum name, from neuter pl. of Latin molluscus, thin-shelled, from mollis, soft; see mel-1 in Indo-European roots.



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  • mollusk doorknob.

    August 17, 2012

  • Usage on ecodog.

    July 28, 2009

  • . . . the rich and interesting delineations of the zoophytes and mollusks are very new and striking.

    --J. Pinkerton, 1811, Petralogy. A Treatise on Rocks vol. I, p. 453.

    Antedates OED entry from 1832.

    February 27, 2009

  • A mollusk is a cheap edition of man with a suppression of the costlier illustrations, designed for dingy circulation, for shelving in an oyster-bank or among the seaweed.

    --Ralph Waldo Emerson, circa 1870, Power and Laws of Thought

    November 8, 2007

  • See clam.

    October 11, 2007