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short, thickened underground stem, usually covered with papery leaves. A corm grows vertically, producing buds at the upper nodes and roots from the lower surface. Corms serve as organs of food storage and in some plants (e.g., crocus and gladiolus) of asexual reproduction; they are often mistakenly called bulbs.
The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



an underground shoot of a plant with an exterior that resembles a bulb (it is often called a bulb); however, its structure is similar to that of a tuber. The scaly leaves are dry and membranous. The nutritive reserve is stored in the pulpy stem. Corms are found in several plants, including crocuses, gladioli, and saffrons.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


A short, erect, fleshy underground stem, usually broader than high and covered with membranous scales.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.


Botany 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 leaves
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Suppliers of corms include Unwins, tel (01945) 588522, and seeds of Freesia alba are listed by Chiltern Seeds, tel (01229) 581137.
Research conducted by Rana et [22] has assessed the effects of CORMs on the bacterium, Salmonella enterica serova typhimurium.
If your area has burrowing rodents like gophers, consider making a "cage" out of chicken wire and bury that in the ground, filling with dirt, and planting corms within the cage.
Carlos Romao of the Institute of Chemical and Biological Technology of the New University of Lisbon, one of the scientific pioneers and inventors of Aflama's CORM assets, in order to further optimize CORM candidates for a variety of indications.
Since 2008, a particular group of light-activated CORMs (also called photo-CORMs) has received most of the scientific interest.
Corm diameter was measured using a digital caliper (precision of 0.01 mm) and the mass of corms was determined on a semi-analytical scale.
The 15 cm between row lead to the highest total yield and corm ash and the lowest corm diameter and cormlet weight (Table 5).
Recently, metal carbonyl compounds have been identified as CO-releasing molecules (CORMs) with the potential to facilitate the pharmaceutical use of CO by delivering it to tissues and organs [18].
Because of the increased use of cold-tender bulbs, corms and tubers in our gardens, as well as those that have a long history of use, it would be a good idea to review the steps needed to preserve them.