or trans fat·ty ac·id
- an unsaturated fatty acid formed by the partial hydrogenation of vegetable oil, believed to raise blood cholesterol levels.
Origin of trans-fatty acid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a polyunsaturated fatty acid that has been converted from the cis-form by hydrogenation: used in the manufacture of margarine