Definition of irenicon in English:

irenicon

(also eirenicon)

noun

formal
  • A proposal made as a means of achieving peace.

    • ‘And yet the book is of value, and of value really as an eirenicon.’
    • ‘We can hardly open a Review without seeing a new Eirenicon between Science and Religion.’
    • ‘On the other hand, the convert Dryden’s personal confession of faith was, at the same time, an eirenicon to the church of England from the catholic side.’

Origin

Early 17th century (as irenicon): from Greek eirēnikon, neuter of eirēnikos promoting peace, from eirēnē peace. Compare with irenic.

Pronunciation:

irenicon

/ʌɪˈriːnɪkɒn/