原理

• Reading: げんり
• Romaji: genri
• Kanji breakdown: 原 (gen) — original, source; 理 (ri) — reason, logic, principle
• Pronunciation: /ɡeɴ.ɾi/

Meaning

Principle; fundamental truth; underlying theory that governs how something works.

A noun for the fundamental laws or truths that underlie natural phenomena, systems, or philosophies. More abstract and foundational than 原則 (practical rule/guideline). Common phrases: 原理原則 (fundamental principles), 原理主義 (fundamentalism). Used extensively in science, philosophy, and engineering.

Examples

1. この機械がどんな原理で動いているか説明してほしい。 Can you explain what principle this machine operates on?
2. 物理学の基本原理を理解することが大切だ。 It's important to understand the fundamental principles of physics.
3. 彼の考え方は自由と平等の原理に基づいている。 His way of thinking is based on the principles of freedom and equality.

Usage Guide

Context: science, philosophy, engineering

Tone: academic

Origin & History

Compound of 原 (original, source) + 理 (reason, logic, principle). Together they convey the foundational reasoning or truth at the source of things.

Cultural Context

Era: Classical

Generation: All ages

Social background: Educated