from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. the chemical reaction of hydrogen with another substance, especially with an unsaturated organic compound, and usually under the influence of temperature, pressure and catalysts.

from the GNU version of the Collaborative International Dictionary of English

  • n. The act of combining with hydrogen, or the state of being so combined.

from The Century Dictionary and Cyclopedia

  • n. The act of hydrogenating, or the state of being hydrogenated.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a chemical process that adds hydrogen atoms to an unsaturated oil


Sorry, no etymologies found.


  • This process is called hydrogenation, because it adds hydrogen atoms to the unsaturated chains.

    On Food and Cooking, The Science and Lore of the Kitchen

  • In 1968 William Knowles was the first who was able to demonstrate that chirally catalyzed hydrogenation is feasible.

    The Nobel Prize in Chemistry 2001 - Presentation Speech

  • I had lunch with a physicist friend this afternoon and, look, I know very little about physics, but I was totally envious that he gets to spend his days thinking about stuff that not everyone is equipped to think about, and gets to try and solve problems that actually matter to the world (he's doing something with carbon dioxide and turning it into a liquid so that it can be turned into a gas again -- the point being to save the Earth in some way, the details beyond that have escaped me but he used the word hydrogenation a couple of times).

    Jeremy Blachman's Weblog: 2009

  • Now, the big problem for soybeans that produce oil that doesn’t require hydrogenation is making enough to satisfy demand.

    Dr. Fehr’s Bean Oil Trumps Trans Fat | Impact Lab

  • Trans fat is formed when unsaturated oils are put through a chemical process called hydrogenation.

    The 17 Day Diet

  • In 1913, the German chemist Friedrich Bergius first succeeded in extracting a liquid from coal in a process that became known as hydrogenation.

    The Prize

  • TRANS FATS TRANS FATTY ACIDS–Almost all the trans fat found in food is created by passing hydrogen gas through vegetable oil, a process called hydrogenation, which makes oils harder and more stable.

    The Most Complete Food Counter, 2nd Edition

  • "Trans fat is made by adding hydrogen to vegetable oil through a process called hydrogenation," according to the Mayo Clinic.

  • Trans fats - created when liquid oils are turned into solid fats, a process called hydrogenation - are found in shortening, margarine and partially hydrogenated vegetable oils.

    Statesman - AP Sports

  • Trans fatty acids (trans fats) are created during a hardening process called hydrogenation, which serves to make oils suitable for use in products that require solid fats, such as baked goods and breakfast bars.


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