Definition of embryo sac in English:

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embryo sac

noun

A cell inside the ovule of a flowering plant where fertilization occurs and which becomes the female gametophyte, containing the endosperm nucleus and the fertilized ovum that develops into the embryo.
Example sentences
  • During pollination, the vegetative cell serves as a ‘powerhouse’ to deliver the generative cells to the embryo sac (female gametophyte).
  • Gametophytic apomixis can result from diplospory, in which the unreduced embryo sac originates from a generative cell, or apospory, in which the embryo sac develops from somatic cells of the ovule.
  • The sporogenous cells of the ovary lead to the production of the female gametophyte or embryo sac that contains the egg cell.

For editors and proofreaders

Syllabification: em·bry·o sac

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