Definition

1. Noun:
   • A type of fatty acid with one or more double bonds in its carbon chain: This chemical structure means the molecule is not fully saturated with hydrogen atoms. These double bonds create "kinks" in the molecule's shape.
   • A fatty acid whose carbon chain can absorb additional hydrogen atoms: This is a defining chemical property. The presence of double bonds means that, through a process called hydrogenation, more hydrogen atoms can be added to the carbon chain.

Usage

• Noun:
  • Olive oil is rich in unsaturated fatty acids, which are considered healthier for the heart.
  • Nutritionists recommend replacing saturated fats with unsaturated fatty acids in your diet.

Advanced Usage

• Monounsaturated fatty acid: A subtype with only one double bond in its carbon chain.
  • Oleic acid, found in avocados, is a common monounsaturated fatty acid.
• Polyunsaturated fatty acid: A subtype with two or more double bonds in its carbon chain.
  • Omega-3 fatty acids are essential polyunsaturated fatty acids that the body cannot produce on its own.

Variants and Related Words

• Unsaturated fat (n): A fat or oil that contains a high proportion of unsaturated fatty acids.
  • Foods like nuts and fish are good sources of unsaturated fat.
• Saturated fatty acid (n): A fatty acid with no double bonds between carbon atoms, fully saturated with hydrogen.
  • Butter contains a high amount of saturated fatty acids.

Synonyms

• Healthy fat (informal/nutritional context): Often used to describe unsaturated fatty acids due to their beneficial health effects.
• Essential fatty acid: A specific type of polyunsaturated fatty acid that must be obtained from the diet.

Related Phrases

• Hydrogenated unsaturated fatty acid: Refers to an unsaturated fatty acid that has undergone industrial processing to add hydrogen atoms, often converting it into a saturated or trans fat.
  • Partially hydrogenated oils contain hydrogenated unsaturated fatty acids, which are unhealthy.

Related Concepts

• Cis and trans isomers: Describes the geometric configuration around the double bond in an unsaturated fatty acid. "Cis" is the natural, bent form, while "trans" is an unnatural, straighter form often created during processing.
  • Trans-unsaturated fatty acids, or trans fats, are particularly harmful to cardiovascular health.

Noun

1. a fatty acid whose carbon chain can absorb additional hydrogen atoms