domino theory

noun

Definition of DOMINO THEORY

: a theory that if one nation becomes Communist-controlled the neighboring nations will also become Communist-controlled

: the theory that if one act or event is allowed to take place a series of similar acts or events will follow

See domino theory defined for kids

from the fact that if dominoes are stood on end one slightly behind the other, a slight push on the first will topple the others

First Known Use: 1965

Next Word in the Dictionary: dominulePrevious Word in the Dictionary: domino effectAll Words Near: domino theory

What made you want to look up domino theory? Please tell us where you read or heard it (including the quote, if possible).

Put-downs with flair

How to use a word that (literally) drives some people nuts.

Test your vocab with our fun, fast game

Ailurophobia, and 9 other unusual fears