sigmatism

listen to the pronunciation of sigmatism
Englisch - Türkisch
(Tıp) S" harfini yanlış telaffuz etme, "s harfini söyleyememe
Englisch - Englisch
The intentional repetition of words with sibilant speech sounds closely spaced in a line of poetry, as in, She sells sea-shells by the sea shore (Compare Alliteration)
inability to pronounce sibilant sounds correctly See also: sibilant
{i} incorrect pronunciation of sibilant speech sounds