希薄

• 読み: きはく
• ローマ字: kihaku
• 漢字の分解: 希 (ki) — rare, sparse, thin; 薄 (haku/usu) — thin, light, dilute, weak
• 発音: /ki.ha.kɯ/

意味

Thin; dilute; sparse; weak; faint. Describes concentration, density, or intensity that is insufficiently strong — whether in a physical medium or an abstract quality.

A na-adjective used in both scientific/technical contexts (rarified gases, dilute solutions) and figurative contexts (weak human connections, diminished awareness). The figurative use is very common in modern journalism and social commentary, particularly when discussing weakened community bonds, faint motivation, or low levels of something intangible.

例文

1. 高地では空気が希薄なため、登山には十分な準備が必要だ。
2. 現代社会では近所とのつながりが希薄になっていると言われる。
3. チームとしての一体感が希薄なままでは、良い結果は出せない。

使い方ガイド

場面: science, social commentary, abstract

トーン: neutral

起源と歴史

Sino-Japanese compound of 希 (sparse, rare, thin) and 薄 (thin, diluted, weak). Originally a scientific term for rarified gases; later extended metaphorically to any domain where presence or intensity is diminishingly weak.

文化的背景

時代: Modern

世代: Adults

社会的背景: Universal