Origin of macrospore
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for macrospore
The nucellus is a cellular tissue enveloping one large cell, the embryo-sac or macrospore.
The macrospore divides into two cells, a large lower one, and a smaller upper one.Elements of Structural and Systematic Botany
Douglas Houghton Campbell
But the formation of the macrospore or embryo-sac is simpler than the corresponding process in cryptogams.
The larger ones contain each a large spore, or macrospore; the smaller contain numerous microspores, immersed in mucilage.The Elements of Botany
- another name for megaspore (def. 1)
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 macrospore
Online Etymology Dictionary, © 2010 Douglas Harper