Definition
Constitutional division of government into distinct branches (executive, legislative, judicial) with different powers and the ability to check each other. Montesquieu's brilliant idea to prevent tyranny, assuming the branches actually want to check each other.
Example Usage
The court invoked separation of powers to strike down the executive order, ruling it usurped legislative authority.
Origin
Enlightenment political theory, particularly Montesquieu's 'Spirit of the Laws' (1748)
Fun Fact
The US Constitution never explicitly uses the phrase 'separation of powers'—it just creates three branches and hopes they'll fight over authority.
Source: Constitutional law fundamentals
Related Terms
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