diesis noun. ['dʌɪɪsɪs] Pl. -eses [-ɪsi:z]. LME.
[Latin from Greek = quarter-tone, from diienai send through, formed as DI-³ + ienai send.]
1. Music. An interval equal to the difference between an octave and four minor thirds (greater diesis) or three major thirds (lesser diesis); Hist. any of various intervals smaller than a tone, esp. a quarter-tone. LME.

2. Typography. The double dagger. E18.

[TahlilGaran] English Dictionary ▲