separation of powers

American  

[sep-uh-rey-shuhn uhv pou-erz] / ˈsɛp əˌreɪ ʃən əv ˈpaʊ ərz /

noun

1. the principle or system of vesting in separate branches the executive, legislative, and judicial powers of a government.

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separation of powers Cultural  

1. A fundamental principle of the United States government, whereby powers and responsibilities are divided among the legislative branch, executive branch, and judicial branch. The officials of each branch are selected by different procedures and serve different terms of office; each branch may choose to block action of the other branches through the system of checks and balances. The framers of the Constitution designed this system to ensure that no one branch would accumulate too much power and that issues of public policy and welfare would be given comprehensive consideration before any action was taken.

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Compare meaning

How does separation-of-powers compare to similar and commonly confused words? Explore the most common comparisons:

• separation of powers vs. checks and balances

Example Sentences

District Judge Indira Talwani ruled on the states’ case, blocking the order from taking effect after finding it is unconstitutional and in violation of the Constitution’s separation of powers doctrine.

From Slate • Jul. 2, 2026

Pastef, which has 130 of the National Assembly's 165 seats, said the changes were aimed at strengthening the separation of powers across Senegal's executive, legislature and judiciary.

From BBC • Jun. 30, 2026

The court’s decision strengthens the separation of powers.

From MarketWatch • Feb. 23, 2026

It’s an effort to encourage Congress to reclaim its proper authority under the Constitution’s separation of powers.

From The Wall Street Journal • Feb. 22, 2026

The American Congress, the country’s doctrine of separation of powers, as well as the independence of its judiciary, arouse in me similar sentiments.

From "Long Walk to Freedom" by Nelson Mandela