Phrase guide

critical mass

name · 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

name

Meaning 1

A direct action event in which bicycle riders travel through city streets as a group.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The minimum amount of fissile material needed to support a self-sustaining nuclear chain reaction.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Qualifier: nuclear physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

The minimum amount of something or the minimum number of people needed to trigger a phenomenon.

Definition source: English Wiktionary via Wiktextract

Usage: broadly, countable, figuratively, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

the minimum mass of fissionable material that can sustain a chain reaction

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: mass

5

noun

Meaning 5

the minimum amount (of something) required to start or maintain a venture

Definition source: Princeton WordNet 3.0

Examples

  • the battle for the computer market has now reached critical mass
  • there is now a critical mass of successful women to take the lead
  • they sold the business because it lacked critical mass

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: amount

History

Etymology

No etymology was provided for this word.

Across languages

Translations

27 source translations are retained for this English entry.

  • Breton: tolz eizik — the minimum amount of fissile material needed to a nuclear chain reaction
  • Catalan: massa crítica — the minimum amount of fissile material needed to a nuclear chain reaction
  • Czech: kritické množství — the minimum amount of fissile material needed to a nuclear chain reaction
  • Dutch: kritische massa — the minimum amount of fissile material needed to a nuclear chain reaction
  • Finnish: kriittinen massa — the minimum amount of fissile material needed to a nuclear chain reaction
  • French: masse critique — the minimum amount of fissile material needed to a nuclear chain reaction
  • German: kritische Masse — the minimum amount of fissile material needed to a nuclear chain reaction
  • Greek: κρίσιμη μάζα (krísimi máza) — the minimum amount of fissile material needed to a nuclear chain reaction
  • Hungarian: kritikus tömeg — the minimum amount of fissile material needed to a nuclear chain reaction
  • Icelandic: markmassi — the minimum amount of fissile material needed to a nuclear chain reaction
  • Italian: massa critica — the minimum amount of fissile material needed to a nuclear chain reaction
  • Japanese: 臨界質量 (rinkai shitsuryō) — the minimum amount of fissile material needed to a nuclear chain reaction
  • Polish: masa krytyczna — the minimum amount of fissile material needed to a nuclear chain reaction
  • Portuguese: massa crítica — the minimum amount of fissile material needed to a nuclear chain reaction
  • Romanian: masă critică — the minimum amount of fissile material needed to a nuclear chain reaction
  • Russian: крити́ческая ма́сса (kritíčeskaja mássa) — the minimum amount of fissile material needed to a nuclear chain reaction
  • Swedish: kritisk massa — the minimum amount of fissile material needed to a nuclear chain reaction
  • Tagalog: maselang bugat — the minimum amount of fissile material needed to a nuclear chain reaction
  • Ukrainian: крити́чна ма́са (krytýčna mása) — the minimum amount of fissile material needed to a nuclear chain reaction
  • Czech: kritické množství — the minimum number of people needed to trigger a phenomenon
  • Danish: kritisk masse — the minimum number of people needed to trigger a phenomenon
  • Finnish: kriittinen massa — the minimum number of people needed to trigger a phenomenon
  • German: kritische Masse — the minimum number of people needed to trigger a phenomenon
  • Greek: κρίσιμη μάζα (krísimi máza) — the minimum number of people needed to trigger a phenomenon
  • Polish: masa krytyczna — the minimum number of people needed to trigger a phenomenon
  • Romanian: masă critică — the minimum number of people needed to trigger a phenomenon
  • Swedish: kritisk massa — the minimum number of people needed to trigger a phenomenon