Standard Lemma guide

fucoid

adj · noun · 5 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

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1

adj

Meaning 1

Resembling or relating to seaweeds of the genus Fucus.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

Of sandstone: bearing seaweed-like markings.

Definition source: English Wiktionary via Wiktextract

Examples

  • Calcareous siltstone, Cambrian Fucoid Beds, earth.ox.ac.uk webpage The Fucoid beds are quite variable in appearance in composition [...] The rock unit got its name from the early belief that these markings were the compressed remains of seaweeds (fucoids). Now it is thought that they are the trails left by feeding creatures on the sea floor.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A fucoid seaweed.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

any of various algae of the family Fucaceae

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: fucoid algae

Antonyms: none provided

Broader terms: brown algae

5

noun

Meaning 5

a fossilized cast or impression of algae of the order Fucales

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: fossil

History

Etymology

From Ancient Greek φῦκος (phûkos, “seaweed”).