Main Entry: di·esis

Pronunciation: \ˈdī-ə-səs\

Function: noun

Inflected Form(s): plural di·eses \-ˌsēz\

Etymology: probably from Italian, sharp (in music), symbol for a sharp, from Medieval Latin, quarter tone, from Latin, from Greek, from diiēnai to send through, from dia- + hienai to send — more at jet

Date: circa 1706

: double dagger