diaeresis
noun /daɪˈerəsɪs/
/daɪˈerəsɪs/
(British English) (US English dieresis)
(plural diaereses, diereses
(specialist) /daɪˈerəsiːz/
/daɪˈerəsiːz/
)- the mark placed over a vowel to show that it is pronounced separately, as in naïve
分音符（标在元音上面，表示单独发音，如 naïve） 词源late 16th cent. (denoting the division of one syllable into two): via Latin from Greek diairesis ‘separation’, from diairein ‘take apart’, from dia ‘apart’ + hairein ‘take’.