退化

• 読み: たいか
• ローマ字: taika
• 漢字の分解: 退 (tai) — to retreat, withdraw, regress; 化 (ka/ke) — to change, transform
• 発音: /ta.i.ka/

意味

Degeneration; regression; atrophy. A decline to a less developed or functional state.

A する verb (退化する) used in both biological and figurative contexts. In biology, it refers to the atrophy of organs or features through evolution, such as the human appendix. Figuratively, it describes skills, abilities, or qualities that deteriorate from disuse or neglect, like language skills fading without practice.

例文

1. スマホに頼りすぎて漢字を書く能力が退化した。
2. 使われなくなった器官は長い年月をかけて退化する。
3. 運動しないと筋肉が退化してしまう。

使い方ガイド

場面: biology, science, self-improvement, daily life

トーン: concerned

起源と歴史

Compound of 退 (tai, to retreat/withdraw) + 化 (ka, to change/transform). Literally 'retreating transformation,' describing a change in the direction of decline.

文化的背景

時代: Modern

世代: All ages

社会的背景: Universal