Standard Lemma guide

nostoc

noun · 2 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

noun

Meaning 1

Any member of the genus Nostoc of cyanobacteria, found in a variety of environmental niches, that form colonies composed of filaments of moniliform cells in a gelatinous sheath.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

found in moist places as rounded jellylike colonies

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: cyanobacteria, blue-green algae

History

Etymology

From the genus name.

Across languages

Translations

4 source translations are retained for this English entry.

  • Catalan: nòstoc — genus of cyanobacteria
  • Chinese Mandarin: 葛仙米 (géxiānmǐ) — genus of cyanobacteria
  • Finnish: nostoc — genus of cyanobacteria
  • Russian: носто́к (nostók) — genus of cyanobacteria
Real reading context

nostoc in complete knowledge articles