Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of embryo sac is as below...

Perisperm :: Perisperm (n.) The albumen of a seed, especially that portion which is formed outside of the embryo sac..

Embryo Sac :: Embryo sac () See under Embryonic.

Endosperm :: Endosperm (n.) The albumen of a seed; -- limited by recent writers to that formed within the embryo sac.

Spore :: Spore (n.) An embryo sac or embryonal vesicle in the ovules of flowering plants.

Tercine :: Tercine (n.) A cellular layer derived from the nucleus of an ovule and surrounding the embryo sac. Cf. Quintine.

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