duck·​weed | \ ˈdək-ˌwēd How to pronounce duckweed (audio) \

Definition of duckweed

: a small floating aquatic monocotyledonous plant (family Lemnaceae, the duckweed family)

Examples of duckweed in a Sentence

Recent Examples on the Web Fish can’t survive there because duckweed depletes the oxygen that aquatic life needs to survive, Hulke said. Gloria Casas,, 26 Nov. 2021 The drama is heightened by the blanket of duckweed that has turned the placid, still water a surreal shade of green. Washington Post, 7 July 2021 To make up for any deficiency, dieters are asked to consume what's known as Wolffia globosa, or a byproduct of duckweed, an aquatic plant. Zee Krstic, Good Housekeeping, 7 Dec. 2020 Scientists have learned that duckweed can produce almost the same amount of protein as soybeans, soak up heavy metals and be revived after months or years in a freezer, Harkess said. Lee Roop |, al, 1 Sep. 2020 Demmig-Adams and her colleagues are exploring the best possible ways to grow duckweed. Jennifer Leman, Popular Mechanics, 16 July 2020 The tricky thing about growing duckweed (and all plants) in space is getting the conditions just right in order to maximize productivity and nutrient growth. Jennifer Leman, Popular Mechanics, 16 July 2020 And God was not waiting for artists among tupelo gum trees or brackish marsh or duckweed. Zachary Fine, The New York Review of Books, 8 Feb. 2020 Plants include bacopa, elodea, stream moss, duckweed, azolla and ludwigia. Janene Holzberg,, 3 Sep. 2019 See More

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

First Known Use of duckweed

15th century, in the meaning defined above

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The first known use of duckweed was in the 15th century

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Dictionary Entries Near duckweed



duckweed family

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Cite this Entry

“Duckweed.” Dictionary, Merriam-Webster, Accessed 4 Jul. 2022.

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More from Merriam-Webster on duckweed

Britannica English: Translation of duckweed for Arabic Speakers Encyclopedia article about duckweed


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