sea·​weed | \ˈsē-ˌwēd \

Definition of seaweed 

1 : a mass or growth of marine plants

2 : a plant growing in the sea especially : a marine alga (such as a kelp)

Examples of seaweed in a Sentence

Recent Examples on the Web

The toxic algae and seaweed are also hurting tourism and making people sick. Jennie Neufeld, Vox, "Vox Sentences: Nearly 1,000 killed by floods in India," 18 Aug. 2018 Place in a sunny, sheltered spot, keep well watered, and feed with liquid seaweed every two weeks throughout the growing season. The Editors, Good Housekeeping, "8 Fruit Trees You Can Grow Right on Your Porch," 24 July 2018 Just don’t expect pristine white sand and turquoise waters at the property — unlike the Hotel Zone, the beaches in this area of town often have an unpleasant odor and are strewn with seaweed. Alisha Prakash, USA TODAY, "10 Caribbean resorts with awesome water parks," 2 May 2018 Box crab is arranged in a circle on a plate with seaweed, served with a rich double consommé made with the crab and seasoned table side by a server delivering the essence of coconut and coffee via eyedroppers. Michael Bauer,, "Atelier Crenn: SF’s newest 4-star restaurant," 29 June 2018 Buy now at Amazon To answer your first question: yes, this mask smells like seaweed. Garrett Munce, GQ, "The Best Sheet Masks Will Reboot Your Face," 2 Mar. 2018 Along parts of South Florida's Atlantic coast, mounds of seaweed known as sargassum have been pushed ashore by strong winds and ocean currents, dulling the water and coating beaches. Jennifer Kay,, "Blue-green algae, red tide soil beaches, threaten Florida tourism," 10 July 2018 One of the bikes had a string of seaweed wrapped around its handlebars. Steve Annear,, "People are chucking dockless bikes into the ocean in Quincy," 28 June 2018 Waraku This bright, comfy snack bar opened in 2010 and specializes in teas, bento boxes and freshly made onigiri -— the popular stuffed Japanese rice balls wrapped in sheets of seaweed. Giulia Pines, New York Times, "Five Places to Go in Düsseldorf," 11 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'seaweed.' 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 seaweed

1577, in the meaning defined at sense 1

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Statistics for seaweed

Last Updated

16 Nov 2018

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The first known use of seaweed was in 1577

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English Language Learners Definition of seaweed

: a type of plant that grows in the sea


sea·​weed | \ˈsē-ˌwēd \

Kids Definition of seaweed

: an alga (as a kelp) that grows in the sea

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Comments on seaweed

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