Standard Lemma guide

ascus

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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  • /ˈæskəs/

1

noun

Meaning 1

A sac-shaped cell present in ascomycete fungi; it is a reproductive cell in which meiosis and an additional cell division produce eight spores.

Definition source: English Wiktionary via Wiktextract

Topics: biology, mycology, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

saclike structure in which ascospores are formed through sexual reproduction of ascomycetes

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: reproductive structure

History

Etymology

From New Latin ascus, from Ancient Greek ἀσκός (askós, “a sac”). Doublet of askos.

Across languages

Translations

10 source translations are retained for this English entry.

  • Finnish: itiökotelo — a sac-shaped cell present in ascomycete fungi
  • French: asque — a sac-shaped cell present in ascomycete fungi
  • German: Ascus — a sac-shaped cell present in ascomycete fungi
  • Irish: ascas — a sac-shaped cell present in ascomycete fungi
  • Latin: ascus — a sac-shaped cell present in ascomycete fungi
  • Polish: worek — a sac-shaped cell present in ascomycete fungi
  • Portuguese: asco — a sac-shaped cell present in ascomycete fungi
  • Romanian: ască — a sac-shaped cell present in ascomycete fungi
  • Russian: аск (ask) — a sac-shaped cell present in ascomycete fungi
  • Russian: сумка (sumka) — a sac-shaped cell present in ascomycete fungi