Dictionary
big bang
noun
Definition of BIG BANG
: the cosmic explosion that marked the beginning of the universe according to the big bang theory — compare big crunch
See big bang defined for English-language learners
See big bang defined for kids
ADVERTISEMENT
First Known Use of BIG BANG
1950
Rhymes with BIG BANG
Browse
Next Word in the Dictionary: big bang theoryPrevious Word in the Dictionary: big bandAll Words Near: big bang
ADVERTISEMENT
Seen & Heard
What made you want to look up big bang? Please tell us where you read or heard it (including the quote, if possible).