endosperm

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noun en·do·sperm \ˈen-dō-ˌspərm\

Definition of endosperm

  1. :  a nutritive tissue in seed plants formed within the embryo sac by division of the endosperm nucleus

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These example sentences are selected automatically from various online news sources to reflect current usage of the word 'endosperm'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of endosperm

French endosperme, from end- + Greek sperma seed — more at sperm


First Known Use: 1819


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