- A fat having chains of unsaturated fatty acids.
- A triglyceride fat containing at least one unsaturated fatty acid. Fats derived from plants are often unsaturated fats. Eating foods high in unsaturated fats can reduce the amount of cholesterol in the blood. Compare saturated fat.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.