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sigmatism

American  
[sig-muh-tiz-uhm] / ˈsɪg məˌtɪz əm /

noun

  1. defective pronunciation of sibilant sounds.

Etymology

Origin of sigmatism

1885–90; < Greek sigmat-, stem of sígma sigma + -ism

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.