First Known Use: 1819
Dictionary
endosperm
noun en·do·sperm \ˈen-dō-ˌspərm\
Definition of ENDOSPERM
: a nutritive tissue in seed plants formed within the embryo sac by division of the endosperm nucleus
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Origin of ENDOSPERM
French endosperme, from end- + Greek sperma seed — more at sperm
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