noun, plural di·er·e·ses [dahy-er-uh-seez] /daɪˈɛr əˌsiz/.
Origin of dieresis
British Dictionary definitions for dieretic
noun plural -ses (-ˌsiːz)
Word Origin and History for dieretic
also diaeresis, 1610s, "sign marking the division of a diphthong into two simple sounds," from Late Latin diaeresis, from Greek diairesis "division," noun of action from diairein "to divide, separate," from dia- "apart" (see dia-) + hairein "to take" (see heresy).