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 U.S. Food and Drug Administration explains. Carolyn L. Todd, SELF, 14 Jan. 2022 When grains are refined to make, say, white rice or white flour, the bran and germ are processed out, leaving just the starchy endosperm. Lisa Zwirn, BostonGlobe.com, 11 Jan. 2022 Refined grains, on the other hand, have had the bran and the germ removed during processing, according to the FDA, leaving only the starchy endosperm. Carolyn L. Todd, SELF, 14 Jan. 2022 The two most important parts of a corn kernel with regard to popcorn are the endosperm — kind of like an energy pack made of starch that helps the corn seed grow into a new plant — as well as a teeny-tiny bit of water. Washington Post, 14 Nov. 2021 On other hand, refined grains such as white rice and all-purpose flour have been milled to remove the bran and germ, stripping away much of the fiber, protein and vitamins, and leaving only the starchy endosperm. Casey Barber, CNN, 27 Oct. 2021 That's because white rice is not a whole grain; it's refined, meaning the bran and germ are stripped away, leaving only the endosperm. Cynthia Sass, Mph, Health.com, 20 Oct. 2021 With white rice, the grain is polished in a way that removes two parts—the bran and embryo—and leaves a starchy section called the endosperm. Cynthia Sass, Rd, Health.com, 1 July 2021 While refined flour is made from the endosperm of the grain, whole grains include the germ and bran. Washington Post, 5 Apr. 2021 See More

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.

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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The first known use of endosperm was in 1819

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endosperm nucleus

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Cite this Entry

“Endosperm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/endosperm. Accessed 3 Jul. 2022.

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More from Merriam-Webster on endosperm

Britannica.com: Encyclopedia article about endosperm


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