hydroxybenzoic acid

noun

hy·droxy·ben·zo·ic acid | \ -ben-ˌzō-ik-

How to pronounce hydroxybenzoic acid (audio)

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Medical Definition of hydroxybenzoic acid

: any of three crystalline derivatives C₇H₆O₃ of benzoic acid that contain one hydroxyl group per molecule: as

a : the colorless para-substituted acid used in making several of its esters that are effective preservatives

— called also parahydroxybenzoic acid

b : salicylic acid

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