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Medical Term:


Pronunciation: o-fi'shal

Definition: Authoritative; denoting a drug or a chemical or pharmaceutical preparation recognized as standard in the pharmacopeia.

[L. officialis, fr. officium, a favor, service, fr. opus, work, + facio, to do]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.