Seaweed Definition

sēwēd
noun
Any sea plant or plants; esp., any marine alga, as kelp.
Webster's New World
A mass of such algae.
American Heritage Medicine
Any similar freshwater plant.
Webster's New World
Seaweed is a water plant, especially saltwater algae.
An example of seaweed is kelp.
YourDictionary
other
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.
American Heritage Science
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Other Word Forms of Seaweed

Noun

Singular:
seaweed
Plural:
seaweeds

Origin of Seaweed

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