from The Century Dictionary.

  • noun The use or presence of sigma or s; repetition or recurrence of s or of the s-sound.
  • noun Difficult or defective pronunciation of the sound s.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A lisp.


Sorry, no etymologies found.


  • They comprise chiefly: sigmatism or imperfect pronunciation of s; rhotacism or imperfect pronunciation of r; lambdacism or imperfect pronunciation of l; gam -

    The Montessori Method


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