Definition of succedaneum in English:

succedaneum

noun

dated, literary
  • A substitute, especially for a medicine or drug.

    • ‘There is nothing so pleasant as to give oneself trouble for a person who is worth one's while. For the best of us, the study of the arts, a taste for old things, collections, gardens are all mere ersatz, succedanea, alibis.’
    • ‘In lieu of me, you will have a very charming succedaneum, Lady Harriet Stanhope.’

Origin

Early 17th century: modern Latin, neuter of Latin succedaneus ‘following after’, from succedere ‘come close after’ (see succeed).

Pronunciation

succedaneum

/ˌsʌksɪˈdeɪnɪəm/