noun · 3 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
UK:/ˈsiːwiːd/
Southern-England:Recorded audio is listed in the source snapshot.
US:/ˈsiwid/
US:Recorded audio is listed in the source snapshot.
CMU ARPABET:S IY1 W IY2 D
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
Any of numerous marine algae, such as a kelp.
Definition source: English Wiktionary via Wiktextract
Usage: uncountable, usually
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
Any of various fresh water plants and algae.
Definition source: English Wiktionary via Wiktextract
Usage: broadly, uncountable, usually
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
noun
Meaning 3
plant growing in the sea, especially marine algae
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.