Try Our Apps


Supposedly vs. Supposably


[dahy-uh-sis] /ˈdaɪ ə sɪs/
noun, plural dieses
[dahy-uh-seez] /ˈdaɪ əˌsiz/ (Show IPA).
Origin of diesis
1350-1400; orig., any of several musical intervals smaller than a tone (for which a double dagger was used as a symbol); Middle English < Latin di(h)esis < Greek díesis literally, a sending through, equivalent to die-, base of diïénai to send through (di- di-3 + hiénai to send) + -sis -sis Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for diesis
Historical Examples
  • A diesis is a quarter tone; hence in a semitone there are included two dieses.

  • The ratio which expresses the value of the diesis is that of 128 to 125.

    Piano Tuning J. Cree Fischer
British Dictionary definitions for diesis


noun (pl) -ses (-ˌsiːz)
(printing) another name for double dagger
  1. (in ancient Greek theory) any interval smaller than a whole tone, esp a semitone in the Pythagorean scale
  2. (in modern theory) the discrepancy of pitch in just intonation between an octave and either a succession of four ascending minor thirds (great diesis), or a succession of three ascending major thirds (minor diesis)
Word Origin
C16: via Latin from Greek: a quarter tone, literally: a sending through, from diienai; the double dagger was originally used in musical notation
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source

Word of the Day

Difficulty index for diesis

Few English speakers likely know this word

Word Value for diesis

Scrabble Words With Friends

Nearby words for diesis