noun hy·dro·fin·ing

Definition of hydrofining

  1. :  a process for improving the quality of gasoline and other petroleum products by treating with hydrogen in the presence of a catalyst at a temperature below that at which decomposition takes place — compare hydroforming

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Origin and Etymology of hydrofining

hydr- + -fining (from refining)

Seen and Heard

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a trip made at another's expense

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