guaifenesin

noun

guai·fen·e·sin | \ g(w)ī-ˈfen-ə-sən

How to pronounce guaifenesin (audio)

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Medical Definition of guaifenesin

: the glyceryl ether of guaiacol C₁₀H₁₄O₄ that is used especially as an expectorant

— called also glyceryl guaiacolate

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