macrospore

[mak-ruh-spawr, -spohr]

noun Botany.

megaspore.

Origin of macrospore

First recorded in 1855–60; macro- + -spore

Related formsmac·ro·spor·ic

[mak-ruh-spawr-ik, -spor-] /ˌmæk rəˈspɔr ɪk, -ˈspɒr-/, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for macrospore

Historical Examples of macrospore

The nucellus is a cellular tissue enveloping one large cell, the embryo-sac or macrospore.
Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1
Various
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.
Scientific American Supplement, Vol. XXI., No. 531, March 6, 1886
Various
The larger ones contain each a large spore, or macrospore; the smaller contain numerous microspores, immersed in mucilage.
The Elements of Botany
Asa Gray

British Dictionary definitions for macrospore

macrospore

noun

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

1859, from macro- + spore (n.).