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Verb: hydrogenize  hI'dró-ju,nIz
  1. Combine or treat with or expose to hydrogen; add hydrogen to the molecule of (an unsaturated organic compound)
    "They hydrogenized the oil to make it more stable";
    - hydrogenate, hydrogenise [Brit]

Derived forms: hydrogenized, hydrogenizing, hydrogenizes

Type of: alter, change, modify