hydrogen

• n. [化学] 水素

hydro-、水、-gen、生成、語源的にはgenerateと同じ。 酸素と接触して水素から水が生成されることから名付けられた。

hydrogen

hydrogen: [18] Greek húdōr ‘water’ (a distant relative of English water) has been a prolific source of English vocabulary. Amongst its contributions are hydrangea [18] (literally ‘water-vessel’, so named from the cuplike shape of its seedpods), hydrant [19], hydrate [18], hydraulic [17] (literally ‘of a water-pipe’), hydrofoil [20], and hydroponics [20] (literally ‘water-culture’). Hydrogen itself means literally ‘generating water’, and was coined in French as hydrogène in the late 1780s for hydrogen’s property of forming water when oxidized. It is first recorded in English in 1791.
=> water

hydrogen (n.)

1791, from French hydrogène, coined 1787 by G. de Morveau, Lavoisier, Berthollet, and Fourcroy from Greek hydr-, stem of hydor "water" (see water (n.1)) + French -gène "producing" (see -gen). So called because it forms water when exposed to oxygen. Nativized in Russian as vodorod; in German, it is wasserstoff, "water-stuff." An earlier name for it in English was Cavendish's inflammable air (1767). Hydrogen bomb first recorded 1947; shortened form H-bomb is from 1950.

1. Hydrogen is used extensively in indusstry for the production of ammonia.

水素は工業的にアンモニア製造に広く用いられている。

2.He mobilized public opinion all over the world against hydrogen -bomb tests.

彼は世界中の世論を動員して水爆実験に反対した。

3.A hydrogen leak forced NASA to ground the space shuttle.

水素漏れは米航空宇宙局にスペースシャトルの打ち上げを停止させた。

4.Carbon， hydrogen and oxygen combine chemically to form carbohydrates and fats.

炭素、水素、酸化合成により炭水化物と脂肪を形成する。

5.In May engineers found a leak in a hydrogen fuel line.

5月エンジニアたちは水素燃料パイプラインに亀裂を発見した。