name · noun · 6 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.
Mid-Atlantic, US:Recorded audio is listed in the source snapshot.
/ˌbɪɡˈbæŋ/
/ˈbɪɡ ˈbæŋ/
Southern-England:Recorded audio is listed in the source snapshot.
US, General-American:Recorded audio is listed in the source snapshot.
1
name
Meaning 1
The cosmic event that marks the beginning of time and the rapid expansion of space for the visible universe. The evolution of the universe since that beginning point is described by the Big Bang Theory.
Definition source: English Wiktionary via Wiktextract
Topics: astronomy, cosmology, natural-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
name
Meaning 2
The sudden deregulation of financial markets effected by prime minister Margaret Thatcher in 1986.
Definition source: English Wiktionary via Wiktextract
Usage: UK, historical
Topics: business, finance
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
name
Meaning 3
Alternative letter-case form of Big Bang.
Definition source: English Wiktionary via Wiktextract
Usage: alt-of
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
noun
Meaning 4
a physical theory that describes how the universe expanded from an infinitely small, hot, and dense point.
Definition source: English Wiktionary via Wiktextract
Topics: astrophysics
Examples
Many-worlds interpretations of physics suggest that millions of big bangs might be happening as we speak.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
noun
Meaning 5
A large implementation of a system rather than phased or gradual delivery.
Definition source: English Wiktionary via Wiktextract
Examples
They're planning for an upcoming release that promises to be a big bang.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
noun
Meaning 6
(cosmology) the cosmic explosion that is hypothesized to have marked the origin of the universe
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: explosion, detonation, blowup
History
Etymology
Coined by English astronomer Fred Hoyle on the BBC Third Programme, broadcast at 18:30 GMT on 28 March 1949. It is a popular but misinformed belief that this was intended as a derogatory term, Hoyle being a proponent of the opposing steady state theory, but Hoyle himself has rejected that notion.
See Big Bang.
Across languages
Translations
68 source translations are retained for this English entry.