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Mollusca

[muh-luhs-kuh] /məˈlʌs kə/
noun
1.
the phylum comprising the mollusks.
Origin
1790-1800
1790-1800; < New Latin, neuter plural of Latin molluscus soft; akin to mollis soft

molluscum

[muh-luhs-kuh m] /məˈlʌs kəm/
noun, plural mollusca
[muh-luhs-kuh] /məˈlʌs kə/ (Show IPA).
Pathology
1.
any of various skin conditions characterized by soft, rounded tumors.
Origin
1805-15; < New Latin, Latin: fungus, noun use of neuter of molluscus soft; akin to mollis soft
Related forms
molluscous, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Word Origin and History for Mollusca
n.

1797, from Modern Latin mollusca, chosen by Linnaeus as the name of an invertebrate order (1758), from neuter plural of Latin molluscus "thin-shelled," from mollis "soft" (see melt (v.)). Linnæus applied the word to a heterogeneous group of invertebrates, not originally including mollusks with shells; the modern scientific use is after a classification proposed 1790s by French naturalist Georges Léopole Chrétien Frédéric Dagobert, Baron Cuvier (1769-1832).

Online Etymology Dictionary, © 2010 Douglas Harper
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Mollusca in Medicine

molluscum mol·lus·cum (mə-lŭs'kəm)
n. pl. mol·lus·ca (-kə)
Any of various skin diseases marked by the occurrence of soft spherical tumors on the face or the body.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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