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[li-gyoo-muh-nuh s] /lɪˈgyu mə nəs/
pertaining to, of the nature of, or bearing legumes.
belonging to the Leguminosae.
Compare legume family.
Origin of leguminous
1650-60; < Latin legūmin- (stem of legūmen; see legume) + -ous
Related forms
nonleguminous, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for leguminous


of, relating to, or belonging to the Fabaceae (formerly Leguminosae), a family of flowering plants having pods (or legumes) as fruits and root nodules enabling storage of nitrogen-rich material: includes peas, beans, clover, gorse, acacia, and carob
Word Origin
C17: from Latin legūmen; see legume
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
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Word Origin and History for leguminous

early 15c., from Latin legumen (see legume) + -ous.

Online Etymology Dictionary, © 2010 Douglas Harper
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leguminous in Science
  (lěg'ym', lə-gym')   
  1. Any of a large number of eudicot plants belonging to the family Leguminosae (or Fabaceae). Their characteristic fruit is a seed pod. Legumes live in a symbiotic relationship with bacteria in structures called nodules on their roots. These bacteria are able to take nitrogen from the air, which is in a form that plants cannot use, and convert it into compounds that the plants can use. Many legumes are widely cultivated for food, as fodder for livestock, and as a means of improving the nitrogen content of soils. Beans, peas, clover, alfalfa, locust trees, and acacia trees are all legumes.

  2. The seed pod of such a plant.

leguminous adjective
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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