The lightest chemical element (symbol H), with an atomic number of 1 and atomic weight of 1.00794. / Molecular hydrogen (H₂), a colourless, odourless and flammable gas at room temperature.

(chemistry) The chemical reaction of hydrogen with another substance, especially with an unsaturated organic compound, and usually under the influence of temperature, pressure and catalysts.

simple past tense and past participle of hydrogenate

that has been treated, or reacted with hydrogen; especially describing a saturated fat so obtained from an unsaturated fat

(chemistry) hydrogen-like

(transitive, chemistry, dated) to hydrogenate

of, related to, or containing hydrogen

(chemistry, transitive) to treat something, or react something, with hydrogen; especially to react an unsaturated fat with hydrogen, in the presence of a nickel catalyst, to produce a harder saturated fat

present participle of hydrogenate

Third-person singular simple present indicative form of hydrogenate