any plant or plants growing in the ocean.
a marine alga.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use seaweed in a sentence
You may not often encounter “burgeoning” and “kelp” in the same sentence, but the seaweed is truly having a moment.
He raises oysters, clams, mussels — and kelp, that brown, slippery seaweed that looks like packing tape.
This model has diversified from nets to include seaweed farming in the Philippines.How Surprising Connections Can Save the Ocean - Issue 99: Universality | Mary Ellen Hannibal | April 29, 2021 | Nautilus
Carrageenan extracted from seaweed is used in products all over the world, but like so many other supply chains, this one has been unfair to local communities.How Surprising Connections Can Save the Ocean - Issue 99: Universality | Mary Ellen Hannibal | April 29, 2021 | Nautilus
Kayanda recently recruited 25 women on Pemba, an island off the Tanzanian coast, to start a production plant for beauty products made from seaweed.
On the other hand, he found my wasabi seaweed a bit off-putting.Tales of a Jailhouse Gourmet: How I learned to Cook in Prison | Daniel Genis | June 21, 2014 | THE DAILY BEAST
Rich in dietary fiber and calcium, hijiki is a black-colored seaweed that grows wild on the Japanese coastline.
Poudre de Neptune (dill, fennel, star anise, seaweed) is by far the most-used seasoning in my kitchen.
The smell of wild thyme mingling with the salt of the low-tide seaweed conveyed stimulating fragrance.Jaffery | William J. Locke
They had dug some clams at the low tide in the forenoon and put them away, covered with wet seaweed.The Rival Campers | Ruel Perley Smith
The uniform level of the seaweed marked the line of the water at the height of the tide, and the limit of the sea in calm weather.Toilers of the Sea | Victor Hugo
Some, covered with a hairy and glutinous seaweed, seemed like large green moles boring a way into the rock.Toilers of the Sea | Victor Hugo
Do you see that orange-and-black striped blazer—there by the seaweed: he's pointing; that's Philip Lacey.Mushroom Town | Oliver Onions
British Dictionary definitions for seaweed
any of numerous multicellular marine algae that grow on the seashore, in salt marshes, in brackish water, or submerged in the ocean
any of certain other plants that grow in or close to the sea
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for seaweed
Any of various red, green, or brown algae that live in ocean waters. Some species of seaweed are free-floating, while others are attached to the ocean bottom. Seaweed range from the size of a pinhead to having large fronds (such as those of many kelps) that can be as much as 30.5 m (100 ft) in length. Certain species are used for food (such as nori) and fertilizer, and others are harvested for carrageenan and other substances used as thickening, stabilizing, emulsifying, or suspending agents in industrial, pharmaceutical, and food products. Seaweed is also a natural source of the element iodine, which is otherwise found only in very small amounts. See more at brown alga green alga red alga.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.