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Meaning of excipient

ex•cip•i•ent

Pronunciation: (ik-sip'ē-unt), [key]
— n. Pharm.
  1. a pharmacologically inert, adhesive substance, as honey, syrup, or gum arabic, used to bind the contents of a pill or tablet.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.