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Noun propanoic acid has 1 sense
propionic acid, propanoic acid - a liquid fatty acid found in milk and sweat and in fuel distillates--1 is a kind of carboxylic acid
 --1 is a substance of
 |  | fenoprofen, fenoprofen calcium, Nalfon; flurbiprofen, Ansaid; ibuprofen, isobutylphenyl propionic acid, Advil, Motrin, Nuprin; ketoprofen, Orudis, Orudis KT, Oruvail; naproxen, Naprosyn; naproxen sodium, Aleve, Anaprox, Aflaxen; oxaprozin, Daypro | 
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