domino theory

noun

1
: a theory that if one nation becomes Communist-controlled the neighboring nations will also become Communist-controlled
2
: the theory that if one act or event is allowed to take place a series of similar acts or events will follow

Examples of domino theory in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
The logic of the domino theory took on particular urgency in the early 1980s, after the collapse of the corrupt and brutal Somoza dynasty in Nicaragua and the coming to power of a Marxist-Leninist government—the Sandinistas, who in turn supported leftist guerrillas in neighboring El Salvador. TIME, 9 Aug. 2024 In this brief study, a Latin American specialist presents an excellent detailed exposition of Cuban troop movements in Africa, Cuban diplomatic activity there, relations… Oligarchs and Officers: The Crisis in El Salvador Not since Vietnam has the domino theory enjoyed such currency in Washington. William M. Leogrande, Foreign Affairs, 23 July 2024 The Vietnam war discredited domino theories, e.g., if Ukraine falls, President Putin will invade and conquer all of Europe and maybe even the United States. Armstrong Williams, Baltimore Sun, 24 Mar. 2024 Two of the key theories underpinning the decision to invade—forcible democracy promotion and the domino theory—had been discredited before 2003. Foreign Affairs, 12 Dec. 2023 There is no objective reason why decisions guided by domino theory are irrational and Putin’s attack on Ukraine is not. Foreign Affairs, 24 Oct. 2023 The domino theory had the Big 12 being one of the beneficiaries of a Pac-12 implosion. Dallas News, 19 Jan. 2023 But in a podcast interview in May with Joe Oltmann, a right-wing activist in Colorado, Griffin placed his outwardly quixotic actions in the context of a sort of domino theory of how the 2020 election might still be overturned. New York Times, 19 July 2022 What about the influence of the domino theory, a key Cold War doctrine, on his decision-making? Michael Bobelian, Washington Post, 1 July 2022

Word History

Etymology

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, in the meaning defined at sense 1

Time Traveler
The first known use of domino theory was in 1965

Dictionary Entries Near domino theory

Cite this Entry

“Domino theory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/domino%20theory. Accessed 15 Nov. 2024.

Kids Definition

domino theory

noun
1
: a theory that if one nation becomes Communist-controlled the neighboring nations will also become Communist-controlled
2
: the theory that if one act or event is allowed to take place a series of similar acts or events will follow

More from Merriam-Webster on domino theory

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!