macrospore

American  

[mak-ruh-spawr, -spohr] / ˈmæk rəˌspɔr, -ˌspoʊr /

noun

Botany.

1. megaspore.

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macrospore British  

/ ˈmækrəʊˌspɔː /

noun

1. another name for megaspore

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Other Word Forms

• macrosporic adjective

Etymology

Origin of macrospore

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

Example Sentences

The macrospores are in the shape of a low triangular pyramid with a hemispherical base, and marked with elevated ribs along the angles.

From Project Gutenberg

Section of a spore-case containing macrospores, equally magnified; at the right three macrospores more magnified.

From Project Gutenberg

It is clear, however, that in all these conidia, macrospores, microspores, and some spermatia, or by whatever names they may be called, there exists a power of germination.

From Project Gutenberg

The macrospore divides into two cells, a large lower one, and a smaller upper one.

From Project Gutenberg

The nucellus is a cellular tissue enveloping one large cell, the embryo-sac or macrospore.

From Project Gutenberg