[a. OFr. aposicion, apposition, variant of opposition, in med.L. sense of oppōnĕre: see APPOSE v.1] A public disputation by scholars; a formal examination by question and answer; still applied to the ‘Speech day’ at St. Paul’s School, London.

1

1659–60.  Pepys, Diary, 9 Jan. My brother John’s speech, which he is to make the next apposition.

2

1864.  Press, 18 June, 588. St. Paul’s School … celebrated its annual Apposition on Wednesday.

3