Dienoic acid is a term used to describe a type of unsaturated fatty acid with two double bonds in its carbon chain. This type of acid is commonly found in plant-based oils such as soybean, corn, and canola oil. Synonyms for dienoic acid include diunsaturated fatty acid, bis-unsaturated fatty acid, and polyenoic acid. These terms all refer to the same type of fatty acid and can be used interchangeably. The presence of dienoic acid in our diets has been linked to a range of health benefits, including improved cardiovascular health and lower risk of chronic diseases such as diabetes and certain cancers.