Esperanta-angla vortaro »

diesa signifas en angla

EsperantaAngla
diesa adjective

sharp [sharper, sharpest](of a note, played a semitone higher than usual)
adjective
[UK: ʃɑːp] [US: ˈʃɑːrp]

C diesa noun

C-sharp(C♯ - a musical note)
noun

Via historio