Webster’s Revised Unabridged Dictionary · 1913
Excipient
Ex·cip′i·ent, a. [L. excipients, -entis, p. pr. of exipere. See Except, v. t.] Taking an exception.
Ex·cip′i·ent, n. 1. An exceptor. [R.]
2. (Med.) An inert or slightly active substance used in preparing remedies as a vehicle or medium of administration for the medicinal agents. Chambers.