体系

• Reading: たいけい
• Romaji: taikei
• Kanji breakdown: 体 (tai/karada) — body, substance; 系 (kei) — lineage, system, connection
• Pronunciation: /ta.i.keː/

Meaning

System; organised framework; a coherent body of knowledge or methods.

A noun referring to an organised, coherent structure of ideas, theories, or methods. Used primarily in academic, intellectual, and technical contexts. The adjective form 体系的 (systematic) is very common. Distinct from 制度 (system as institution/rules) and システム (system as practical setup). Often seen in phrases like 理論体系 (theoretical framework).

Examples

1. 彼の研究は言語学の体系を根本から見直すものだ。 His research fundamentally reexamines the framework of linguistics.
2. 体系的に学ばないと知識がバラバラになる。 If you don't learn systematically, your knowledge becomes fragmented.
3. 新しい教育の体系が導入される予定だ。 A new educational system is scheduled to be introduced.

Usage Guide

Context: academic, research, education, philosophy

Tone: intellectual

Origin & History

Compound of 体 (tai, body/substance) + 系 (kei, lineage/system). Literally 'body system,' conveying the image of an organised structure with interconnected parts, like a living body.

Cultural Context

Era: Modern

Generation: Adults

Social background: Educated