Seaweed

//ˈsiwid// noun

noun ·Moderate ·College level

Definitions

Noun
  1. 1
    Any of numerous marine algae, such as a kelp. uncountable, usually

    "We have lingered in the chambers of the sea / By sea-girls wreathed with seaweed red and brown / Till human voices wake us, and we drown."

  2. 2
    plant growing in the sea, especially marine algae wordnet
  3. 3
    Any of various fresh water plants and algae. broadly, uncountable, usually

    "With light penetrating to the lake bottom, beds of seaweed flourished where little had grown before."

Synonyms

All synonyms
algaeautophytebeanbrackenbrown algaeclimber

Example

More examples

"This is the first time I've had seaweed."

Etymology

From sea + weed.

Related phrases

brown seaweedcrispy seaweedgreen seaweedred seaweedseaweed dermatitisfloating plantsgreen grassgreen slimein oceanin seaocean goopocean grass

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.