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See more synonyms for corm on Thesaurus.com
noun Botany.
  1. an enlarged, fleshy, bulblike base of a stem, as in the crocus.
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Origin of corm

1820–30; < New Latin cormus < Greek kormós a tree trunk with boughs lopped off, akin to keírein to cut off, hew
Related formscorm·like, adjectivecor·moid, adjectivecor·mous, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for corm

Historical Examples

  • Then cut off each stalk about two inches from its junction with the corm.

    Amateur Gardencraft

    Eben E. Rexford

  • In the "corm" then, it is the disc, and not the scale-leaves, that is the great storehouse of food.

  • It has acrid properties, but its corm yields a starch which is known by the name of Portland sago or arrowroot.

  • They tend to rise out of the ground, because the new bulb or corm forms on the top of the old one.

  • Colchicum, kol′chi-kum, n. a genus of Liliace—the meadow saffron, its corm or seed used for gout and rheumatism.

British Dictionary definitions for corm


  1. an organ of vegetative reproduction in plants such as the crocus, consisting of a globular stem base swollen with food and surrounded by papery scale leavesCompare bulb (def. 1)
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Derived Formscormous, adjective

Word Origin

C19: from New Latin cormus, from Greek kormos tree trunk from which the branches have been lopped
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for corm


1570s, from French corme, from Latin cornum "cornel-cherry" (but applied to service-berries in French); see cornel.

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Online Etymology Dictionary, © 2010 Douglas Harper

corm in Science


  1. A fleshy underground stem that is similar to a bulb but stores its food as stem tissue and has fewer and thinner leaflike scales. The crocus and gladiolus produce new shoots from corms. Compare bulb rhizome runner tuber.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.