diaeresis
The origin and history of diaeresis.
Etymology
Diaeresis was taken directly into English from Late Latin diaeresis, itself from Ancient Greek dĭaíresĭs, meaning a distribution or division, and specifically the splitting of a diphthong into two syllables. That Greek noun comes from the verb dĭairéō, to divide or distinguish, built from a prefix meaning across or in different directions plus a root meaning to grasp or take.
