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 owners replaced the roof, using 70,000 pounds of seaweed. Liz Stinson, Curbed, "Renovated seaweed cottage can be yours for $414K," 22 June 2018 Nori’s crispiness comes from the seaweed’s eons of coping with the punishing realities of coastal living. Ali Bouzari,, "Housemade: The magic of Liholiho Yacht Club," 22 June 2018 Though other chefs had identified the unique flavor before, Kikunae was the first one to chemically isolate the glutamate from the seaweed. Yvette D'entremont, SELF, "We All Really Need to Stop Freaking Out About MSG," 20 June 2018 That is nearly one whole year under the sea — with the seaweed, sharks and sense of the vast unknown and countless species yet to be discovered. Sarah Bowman, Indianapolis Star, "Sylvia Earle has spent nearly a year underwater and dived 1,250 feet beneath the surface," 10 June 2018 The uncommon architectural trend was the result of a Middle Ages boom in salt production, whose reliance on kilns stripped the island of its trees. Instead of wood, people built homes with seaweed thatched roofs and driftwood. Liz Stinson, Curbed, "Renovated seaweed cottage can be yours for $414K," 22 June 2018 An Australian lab found in 2016 that making seaweed two percent of a cow's feed could inhibiting gas-producing enzymes and cut methane emissions by 99 percent. Benjy Egel, sacbee, "Can seaweed make cow farts less potent? These UC Davis scientists hope to find out | The Sacramento Bee," 24 May 2018 The global seaweed trade produces roughly 30 million tons each year. Karen J. Coates, The Christian Science Monitor, "Warming waters hurt Zanzibar's seaweed. But women farmers have a plan.," 21 May 2018 Crouch said he's known for cooking outside of the box, and his fish dishes — served with a black garlic mirin emulsion and fresh seaweed — will stay on brand. Bailey Loosemore, The Courier-Journal, "$300 mushrooms might be a risk. But for Kentucky Derby, Louisville chefs hold nothing back," 17 Apr. 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

7 Sep 2018

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Time Traveler for seaweed

The first known use of seaweed was in 1577

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More Definitions for seaweed



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

What made you want to look up seaweed? Please tell us where you read or heard it (including the quote, if possible).


alleviating pain or harshness

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