界定

• ピンイン: jiè dìng
• 漢字の分解: 界 = 田 + 介 — boundary; 定 = 宀 + 疋 — to fix, determine

意味

（範囲・概念を）明確に定義する；線引きする

A formal term often used in legal, academic, and professional contexts for establishing clear definitions or boundaries. More precise than 定义, implying setting boundaries between categories or concepts.

例文

1. 法律需要明确界定什么行为构成犯罪。
2. 这两个学科之间的界限很难界定。
3. 公司正在重新界定各部门的职责范围。

使い方ガイド

場面: legal, academic, professional

トーン: technical

正しい言い方

• 这个概念如何界定？(How is this concept defined?)
• 责任需要明确界定。(Responsibilities need to be clearly defined.)

避ける言い方

• 在日常口语中用'界定' (Don't use 界定 in casual speech — use 定义 or 说明; 界定 is for formal contexts)

起源と歴史

Composed of 界 (boundary; limit) + 定 (to fix; to determine). Together they describe establishing boundaries or definitions.

文化的背景

世代: All ages

社会的背景: Professional and academic