'Succedaneum' definitions:

Definition of 'succedaneum'

(from WordNet)
noun
(medicine) something that can be used as a substitute (especially any medicine that may be taken in place of another)

Definition of 'Succedaneum'

From: GCIDE
  • Succedaneum \Suc`ce*da"ne*um\, n.; pl. Succedanea. [NL. See Succedaneous.] One who, or that which, succeeds to the place of another; that which is used for something else; a substitute; specifically (Med.), a remedy used as a substitute for another. [1913 Webster]
  • In lieu of me, you will have a very charming succedaneum, Lady Harriet Stanhope. --Walpole. [1913 Webster]