dieresis
Syllabification: (di·er·e·sis)
Pronunciation: /dīˈerəsis/
(also diaeresis)
Definition of dieresis
noun ( plural diereses /-ˌsēz/)
Origin:
late 16th century (denoting the division of one syllable into two): via Latin from Greek diairesis 'separation', from diairein 'take apart', from dia 'apart' + hairein 'take'