endosperm

noun
en·​do·​sperm | \ ˈen-dō-ˌspərm How to pronounce endosperm (audio) \

Definition of endosperm

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

Examples of endosperm in a Sentence

Recent Examples on the Web

In their whole, natural form, grain seeds, or kernels, consist of three parts: the bran (the tough outer layer), the germ (the tiny, nutrient-dense core), and the endosperm (the largest, starchy part) the Food and Drug Administration (FDA) explains. Carolyn L. Todd, SELF, "What Exactly Are Refined Carbs?," 18 May 2019 Orchid seeds lack the starchy endosperm that helps to feed the new sprouts of many other types of plants. Jackson Landers, Smithsonian, "A Mystery of Hiding Orchids, Solved," 19 Jan. 2017 Standard AP flour is a white flour, meaning the wheat grains (called wheatberries) have been stripped of their bran and germ during processing and grinding, leaving just the starchy endosperm. Claire Saffitz, Bon Appetit, "What's the Difference Between Bread Flour, All-Purpose Flour, Cake Flour, and Pastry Flour? (Phew!)," 8 Aug. 2017 Then came the efficient steel roller mill with spinning cylinders that discarded the germ and bran to yield a practically unspoilable flour composed solely of the white endosperm — aka white flour. Laura Levy Shatkin, chicagotribune.com, "What's in your bread (or vodka)? Chicago's appetite for interesting grains is growing," 2 June 2017 All three of wheat's main components were ground together: the fiber-rich bran, the flavorful germ and the starchy endosperm. Laura Levy Shatkin, chicagotribune.com, "What's in your bread (or vodka)? Chicago's appetite for interesting grains is growing," 2 June 2017 Remaining is the starchy endosperm that provides a finer texture and extended shelf life. Bryant Stamford, The Courier-Journal, "If you see 'whole wheat,' it's definitely healthy, right? Sorry, maybe not," 6 July 2017 Orchid seeds lack the starchy endosperm that helps to feed the new sprouts of many other types of plants. Jackson Landers, Smithsonian, "A Mystery of Hiding Orchids, Solved," 19 Jan. 2017

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.

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First Known Use of endosperm

1819, in the meaning defined above

History and Etymology for endosperm

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

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Last Updated

28 Jul 2019

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Time Traveler for endosperm

The first known use of endosperm was in 1819

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More from Merriam-Webster on endosperm

Britannica.com: Encyclopedia article about endosperm

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