Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English

hydr(o)-2

Hydrogen

[>Greek hudōr, hudro-, water.]

Hydrogen is the ‘water maker’ because it produces water when burned in air or oxygen; hydrochloric acid is a strongly acidic solution of the gas hydrogen chloride in water; the hydroxonium ion is H3O+, the hydrated hydrogen ion. A hydrocarbon is a compound of hydrogen and carbon; a hydride is a binary compound of hydrogen with a metal; hydrazine (hydro- plus azo- and -ine3) is a fuming liquid often used as a rocket fuel; hydrogenation is the chemical addition of hydrogen to a substance. See also dehydro-.

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