Новый большой англо-русский словарь. 2001.
Diapase — Di a*pase, n. Same as {Diapason}. [Obs.] [1913 Webster] A tuneful diapase of pleasures. Spenser. [1913 Webster] … The Collaborative International Dictionary of English
diapase — noun diapason … Wiktionary
diapase — … Useful english dictionary