Definition of octanoic acid in US English:

octanoic acid


  • Any saturated fatty acid of the formula C₇H₁₅COOH, of which several isomers exist; specifically (also "n-octanoic acid") the straight-chain primary acid, CH₃(CH₂)₆COOH, a liquid (also called caprylic acid), glycerides of which are present in butter and many other fats.


Early 20th century; earliest use found in Journal of the Chemical Society.