Definition of pollen grain in English:

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pollen grain


Each of the microscopic particles, typically single cells, of which pollen is composed. Pollen grains have a tough coat that has a form characteristic of the plant producing it.
Example sentences
  • The pollen grain is the male gametophytic phase of flowering plants.
  • The pollen grain (male gametophyte) is a three-celled structure composed of two generative cells encased within the vegetative cell.
  • The transfer of the pollen grain (male gametophyte) from the stamen to the stigma initiates the processes that can result in fertilization.

For editors and proofreaders

Syllabification: pol·len grain

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