granum
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gra·num
(grā′nəm)n. pl. gra·na (-nə)
A membranous structure within a chloroplast made up of stacks of thylakoids.
[Latin grānum, seed; see grain.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
granum
(ˈɡrænəm)n
(Botany) botany any of the membrane layers in a chloroplast
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
gra•num
(ˈgreɪ nəm)n., pl. -na (-nə).
1. (in prescriptions) a grain.
2. one of the structural units of a chloroplast in vascular plants, consisting of layers of thylakoids.
[1890–1900; < Latin]
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