Coined 1783 by Lavoisier from Greek 'hydro-' (water) + '-genēs' (producing) — literally 'water-begetter,' since burning it makes water.
Definition
The lightest chemical element (atomic number 1), a colorless, odorless, highly flammable gas that is the most abundant element in the universe.
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French (from Greek)1783well-attested
Coined in 1787 by Antoine Lavoisier from Greek hydōr (water) and the suffix -genēs (producing, born of). The compound hydro-gen means literally water-producer, becauseburning hydrogen yields water. The element hydōr derives from the PIE root *wed- (water, wet), one of the most widespread and ancient roots
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German 'Wasserstoff' (water-substance) andFrench 'hydrogène' (water-begetter) name the same element with the same logic but different language materials. German used its ownwords; French used Greek. Bothrecognized that hydrogen begets water, but their naming strategies
), Old Norse vatn (water), Russian voda (water — hence vodka, literally little water), Greek hydra (water-serpent), and Sanskrit udán (water). The suffix -genēs
. Lavoisier's naming systematised chemistry by encoding composition into nomenclature: hydrogen produces water, oxygen was thought to produce acid. English adopted hydrogen directly from French hydrogène around 1791, and the word has remained unchanged in form since. Key roots: hýdōr (Greek: "water"), -genēs (Greek: "producing, born of, begetting"), *ǵenh₁- (Proto-Indo-European: "to give birth, to beget"), *wódr̥ (Proto-Indo-European: "water").