The principle of conservation of energy states that energy cannot be created or destroyed.
能量守恒原理指出，能量既不能被创造也不能被消灭。
- Frequency-hopping principles from her patent eventually became foundational to modern technologies like Wi-Fi and Bluetooth.
From a Rhetorical Synthesis question · Expression of Ideas
A legal scholar's article dedicates its first section to a hypothetical case with clean, uncomplicated facts, then in each following section introduces one additional complicating factor to the same hypothetical, testing whether the scholar's proposed legal principle still produces a sensible outcome.
From a Text Structure and Purpose question · Craft and Structure
Which choice best defines “principle”?
C — A fundamental truth or proposition serving as the foundation for belief or action. “principle” means a fundamental truth or proposition serving as the foundation for belief or action.
Which word means “a fundamental truth or proposition serving as the foundation for belief or action”?
C — principle. “principle” means a fundamental truth or proposition serving as the foundation for belief or action.
principle — a fundamental truth or proposition serving as the foundation for belief or action. In Chinese: 原则，原理.
principle is pronounced /ˈprɪnsəpl/.
The principle of conservation of energy states that energy cannot be created or destroyed. (能量守恒原理指出，能量既不能被创造也不能被消灭。)
tenet, doctrine, axiom — all close in meaning to principle (a fundamental truth or proposition serving as the foundation for belief or action).
exception, practice — each the opposite of principle (a fundamental truth or proposition serving as the foundation for belief or action).
Yes. principle is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.