Diesis | ‖n.; pl. Dieses [ NL., fr. Gr. &unr_;, fr. &unr_; to let go through, dissolve; dia` through + &unr_; to let go, send. ] 1. (Mus.) A small interval, less than any in actual practice, but used in the mathematical calculation of intervals. [ 1913 Webster ] 2. (Print.) The mark ‡; -- called also double dagger. It is used in printing to indicate a cross reference or footnote Syn. -- double obelisk. [ 1913 Webster ] |