原理 (yuán lǐ) — principle; theory

Definition

原理 is a technical/academic 'principle' — how a system works (科学原理, 基本原理). 原则 is more about rules or standards of conduct; 道理 is everyday reasoning or common sense.

noun
principletheory

Examples

  • 原理。
    Zhè ge yuán lǐ hěn jiǎn dān.
    This principle is very simple.
  • 原理。
    Tā zhèng zài xué xí zì rán yuán lǐ.
    He is learning the principles of nature.
  • 原理。
    Wǒ men yào xiān liǎo jiě jī běn yuán lǐ.
    We need to first understand the basic principles.

Origin

Compound word
构词法gòucífǎ
偏正piānzhèngModifier + head

The first part narrows down the second: it says what kind of thing the head is.

原yuánoriginal
理lǐprinciple

原 means original or basic and 理 means principle; together they denote a basic principle or theory.

Characters in this word

Two or more meaningful parts placed together so that their meanings combine into a new one.

原 combines 泉 (spring) and 厂 (cliff), picturing a spring bursting from a cliff-side, which gives the sense of origin or source.

Open 原 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
玉玉yùjade
Sound part声符shēngfú
里
里lǐ理lǐ
Same sound today

理 pairs 玉 (jade) with 里, which shows how to say it; the jade part points to the old sense of polishing jade.

Open 理 →

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