a. [ L. excipients, -entis, p. pr. of exipere. See Except, v. t. ] Taking an exception. [ 1913 Webster ]
n. 1. An exceptor. [ R. ] [ 1913 Webster ]
2. (Med., Pharmacy) An inert or slightly active substance used in preparing remedies as a vehicle or medium of administration for the medicinal agents. Chambers.