seaweed
noun
sea·weed ˈsē-ˌwēd 
1
: a mass or growth of marine plants
2
: a plant growing in the sea
especially : a marine alga (such as a kelp)
Example Sentences
Recent Examples on the Web Sea moss is a type of seaweed that is rich in nutrients, including iodine, calcium, and magnesium. 
The Salt Lake Tribune, 18 Aug. 2022 For instance, companies like Colorifix are ‘editing’ bacteria to produce sustainable dyes; Loliware and Sway are making plastics out of seaweed. Eben Bayer, Forbes, 17 Aug. 2022 Warner has also been spreading the word about the power of seaweed. Kathy Gunst, Washington Post, 25 July 2022 One person’s best beach is another individual’s rocky, overcrowded field of seaweed. BostonGlobe.com, 22 July 2022 But many other forms of seaweed are edible, from kelp (known as wakame in Japanese, and used in soups and other dishes) to dulse, often baked into soda bread in Ireland. Emily Matchar, Smithsonian Magazine, 12 July 2022 Any traditional coastal cuisine features some of the nearly 12,000 species of seaweed. Elyse Inamine, Bon Appétit, 2 June 2022 The centerpiece idea is a network of thousands of buoys floating in the North Atlantic, each holding a microforest of seaweed and a few pounds of limestone. Bill Weir, CNN, 22 May 2022 Found along the southwestern coast of Australia, the leafy seadragon, Phycodurus eques, uses its fins not only to propel itself through the water, but as camouflage to resemble a piece of drifting seaweed. Courtney Linder, Popular Mechanics, 17 Aug. 2022 See More
The Salt Lake Tribune, 18 Aug. 2022 For instance, companies like Colorifix are ‘editing’ bacteria to produce sustainable dyes; Loliware and Sway are making plastics out of seaweed. Eben Bayer, Forbes, 17 Aug. 2022 Warner has also been spreading the word about the power of seaweed. Kathy Gunst, Washington Post, 25 July 2022 One person’s best beach is another individual’s rocky, overcrowded field of seaweed. BostonGlobe.com, 22 July 2022 But many other forms of seaweed are edible, from kelp (known as wakame in Japanese, and used in soups and other dishes) to dulse, often baked into soda bread in Ireland. Emily Matchar, Smithsonian Magazine, 12 July 2022 Any traditional coastal cuisine features some of the nearly 12,000 species of seaweed. Elyse Inamine, Bon Appétit, 2 June 2022 The centerpiece idea is a network of thousands of buoys floating in the North Atlantic, each holding a microforest of seaweed and a few pounds of limestone. Bill Weir, CNN, 22 May 2022 Found along the southwestern coast of Australia, the leafy seadragon, Phycodurus eques, uses its fins not only to propel itself through the water, but as camouflage to resemble a piece of drifting seaweed. Courtney Linder, Popular Mechanics, 17 Aug. 2022 See More Word History
First Known Use
1577, in the meaning defined at sense 1
Kids Definition
seaweed
noun
sea·weed ˈsē-ˌwēd
: an alga (as a kelp) that grows in the sea