窒素

• 読み: ちっそ
• ローマ字: chisso
• 漢字の分解: 窒 (chitsu) — suffocate, obstruct; 素 (so) — element, base, fundamental
• 発音: /tɕis.so/

意味

Nitrogen (N). A chemical element that makes up approximately 78% of Earth's atmosphere.

A noun for the element nitrogen, important in chemistry, biology, and environmental science. Common collocations include 窒素酸化物 (chisso sankabutsu, nitrogen oxides/NOx), 液体窒素 (ekitai chisso, liquid nitrogen), and 窒素肥料 (chisso hiryou, nitrogen fertiliser). Also historically significant as the Chisso Corporation was responsible for the Minamata disease pollution incident.

例文

1. 空気の約七十八パーセントは窒素で構成されている。
2. 液体窒素はマイナス百九十六度で沸騰する。
3. 植物の成長には窒素が欠かせない栄養素だ。

使い方ガイド

場面: chemistry, agriculture, environment

トーン: neutral

起源と歴史

From Sino-Japanese: 窒 (chitsu, suffocate/obstruct) + 素 (so, element). Literally 'suffocating element' — named because nitrogen alone cannot sustain life, similar to the etymology of the French 'azote' (without life).

文化的背景

時代: Modern

世代: All ages

社会的背景: Universal