#unsaturated_fatty_acid__unsaturatedfattyacid  a fatty acid whose carbon chain can absorb additional hydrogen atoms
  supertype:  #fatty_acid__fattyacid  any of a class of aliphatic monocarboxylic acids that form part of a lipid molecule and can be derived from fat by hydrolysis
  subtype:  #monounsaturated_fatty_acid__monounsaturatedfattyacid  an unsaturated fatty acid whose carbon chain has one double or triple valence bond per molecule; found chiefly in olive oil and chicken and almonds
     subtype:  #elaidic_acid__elaidicacid  a monounsaturated fatty acid that has the same structure as oleic acid except that it is a trans fatty acid; the major trans fatty acid in margarine and fried foods
     subtype:  #oleic_acid__oleicacid  a colorless oily liquid occurring as a glyceride; it is the major fatty acid in olive oil and canola oil; used in making soap and cosmetics and ointments and lubricating oils
  subtype:  #polyunsaturated_fatty_acid__polyunsaturatedfattyacid  an unsaturated fatty acid whose carbon chain has more than one double or triple valence bond per molecule; found chiefly in fish and corn and soybean oil and safflower oil
     subtype:  #alpha-linolenic_acid__alphalinolenicacid  a polyunsaturated fatty acid most abundant in canola oil; a fatty acid essential for nutrition
     subtype:  #docosahexaenoic_acid__docosahexaenoicacid  a polyunsaturated fatty acid found in fish (especially tuna and bluefish)
     subtype:  #elcosapentaenoic_acid  a polyunsaturated fatty acid found in fish (especially tuna and bluefish)
     subtype:  #linoleic_acid__linolic_acid__linolicacid  a liquid polyunsaturated fatty acid abundant in plant fats and oils; a fatty acid essential for nutrition; used to make soap
     subtype:  #linolenic_acid__linolenicacid  a liquid polyunsaturated fatty acid that occurs in some plant oils; an essential fatty acid
  subtype:  #ricinoleic_acid  an oily fatty acid found in castor oil and used in soap
  subtype:  #eleostearic_acid__eleostearicacid__elaeostearicacid  a crystalline unsaturated fatty acid

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