- defective pronunciation of sibilant sounds.
Origin of sigmatism
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for sigmatism
Sigmatism and parasigmatism and paralambdacism are strongly marked.The Mind of the Child, Part II
Word Origin and History for sigmatism
Online Etymology Dictionary, © 2010 Douglas Harper