Meaning of semidemisemiquaver in English:

semidemisemiquaver

Pronunciation /ˌsɛmɪdɛmɪˈsɛmɪkweɪvə/

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.’