excipient
Ex*cip"i*ent, a. Etym: [L. excipients, -entis, p. pr. of exipere. See Except, v. t.] Defn: Taking an exception. Ex*cip"i*ent, n. 1. An exceptor. [R.] 2. (Med.) Defn: An inert or slightly active substance used in preparing remedies as a vehicle or medium of administration for the medicinal agents. Chambers.