Dictionary

acetic anhydride

noun

Definition of ACETIC ANHYDRIDE

:  a colorless liquid C4H6O3 with a pungent odor used in organic synthesis (as of cellulose acetate and aspirin)

First Known Use of ACETIC ANHYDRIDE

1866

acetic anhydride

noun    (Medical Dictionary)

Medical Definition of ACETIC ANHYDRIDE

:  a colorless liquid (CH3CO)2O with a pungent odor and lacrimatory and vesicant action that is used especially in making acetyl derivatives (as aspirin)

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