適合する

• Reading: てきごうする
• Romaji: tekigō suru
• Kanji breakdown: 適 (teki) — suitable, fitting, proper; 合 (gō) — to match, combine, fit
• Pronunciation: /te.ki.ɡoː.sɯ.ɾɯ/

Meaning

To conform to; to be suited to; to fit; to comply with. Indicates meeting requirements or standards.

A する verb (Group 3). Used in technical, legal, and quality-control contexts where something must meet specific standards or criteria. Common pattern: 基準に適合する (to conform to standards). More technical than 合う (to fit) — implies formal compliance.

Examples

1. この製品は国際安全基準に適合している。 This product conforms to international safety standards.
2. 新しい建物は耐震基準に適合しなければならない。 New buildings must comply with earthquake-resistance standards.
3. 環境に適合した生物だけが生き残る。 Only organisms suited to their environment survive.

Usage Guide

Context: quality control, regulations, science

Tone: technical

Origin & History

From Chinese 適合. 適 means 'suitable/fitting' and 合 means 'to match/combine.' Together: to suit and match, to conform.

Cultural Context

Era: Modern

Generation: Adults

Social background: Professional