# hydrogenation

> English word · Noun · frequency rank #63,691

## Definitions
1. The chemical reaction of hydrogen with another substance, especially with an unsaturated organic compound, and usually under the influence of temperature, pressure and catalysts.

## Etymology
From hydrogen + -ation.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/hydrogenation