気体

• 読み: きたい
• ローマ字: kitai
• 漢字の分解: 気 (ki) — air, spirit; 体 (tai) — body, substance
• 発音: /ki.ta.i/

意味

Gas; vapor. One of the three states of matter, where molecules move freely.

A scientific noun referring to the gaseous state of matter. Used in chemistry and physics education as part of the trio: 固体 (solid), 液体 (liquid), 気体 (gas). Common in school science classes and technical discussions. Not used for colloquial references to gas (ガス is used for fuel gas or flatulence).

例文

1. 水は百度で気体になる。
2. 気体は目に見えないものが多い。
3. 理科の授業で気体の性質を学んだ。

使い方ガイド

場面: science, education, chemistry

トーン: neutral

起源と歴史

Composed of 気 (air, spirit, energy) and 体 (body, substance). Together they describe the substance of air — matter in its gaseous form.

文化的背景

時代: Modern

世代: Students and scientists

社会的背景: Universal