Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “domino theory”

domino theory

noun [C usually sing]  /ˈdɑm·ə·noʊ ˌθɪər·i, ˌθi·ə·ri/
politics & government a belief in the 1950s and 1960s that if one country became communist , other close countries would more easily also become Communist
(Definition of domino theory from the Cambridge Academic Content Dictionary © Cambridge University Press)
Add Cambridge dictionaries to your browser to your website

Word of the Day


a man who acts violently, especially to commit a crime

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

crossfit noun

March 23, 2015
high-intensity strength training Two women in strappy dresses discussed how much weight they could snatch

Read More