linolic acid li·no·li·cacid uncommon noun 1. a liquid polyunsaturated fatty acid abundant in plant fats and oils; a fatty acid essential for nutrition; used to make soap Synonymslinoleic acidlinolic acid Related words Broader terms polyunsaturated fatty acid Parts linseed oilcorn oilsoybean oil WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.