Definition of semidemisemiquaver in English:

semidemisemiquaver

noun

British
Music
  • another term for hemidemisemiquaver
    • ‘The pronunciation of the polysyllabic names such as ‘semidemisemiquaver’ or ‘hemidemisemiquaver’ can be impossible stumbling blocks for the pupil with a phonological deficit.’

Pronunciation:

semidemisemiquaver

/ˌsemēˌdemēˈsemēˌkwāvər/