noun Botany.
one of the characteristic chafflike bracts of the inflorescence of grasses, sedges, etc., especially one of the pair of bracts at the base of a spikelet.

1570–80; < Latin glūma husk enclosing a cereal grain, probably equivalent to glūb(ere) to strip the bark from + *-sma noun suffix

glumelike, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
glume (ɡluːm)
1.  botany one of a pair of dry membranous bracts at the base of the spikelet of grasses
2.  the bract beneath each flower in a sedge or related plant
[C18: from Latin glūma husk of corn; related to Latin glūbere to remove the bark from]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
glume   (glm)  Pronunciation Key 
One of the two chaffy bracts at the base of a grass spikelet.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Preliminary results on genetic studies of outer glume characters in barley.
The first glume is three-fourths as long as, to equal to, the length of the lemma.
The ultrastructure of leaf and glume chloroplasts differs.
She also hopes to determine if there are relationships between glume size and grain traits.
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