macrospore

[mak-ruh-spawr, -spohr]

noun

Botany.

1. megaspore.

macrospore

/ ˈmækrəʊˌspɔː /

noun

1. another name for megaspore

Other Word Forms

• macrosporic adjective

Word History and Origins

Origin of macrospore¹

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.

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

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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.

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

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

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