pollen sac

noun

, Botany.

1. one of the cavities in an anther in which pollen is produced.

pollen sac

1. The microsporangium of a seed plant in which pollen is produced. The pollen sacs of angiosperms are located in the anthers, while those of conifers are located in the male cones.

Word History and Origins

Origin of pollen sac¹

First recorded in 1870–75

Example Sentences

Germination of the microspore begins before it leaves the pollen-sac.

From Project Gutenberg