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EnglishEdit

EtymologyEdit

sigma +‎ -ism

PronunciationEdit

NounEdit

sigmatism (countable and uncountable, plural sigmatisms)

  1. A lisp.
  2. Defective pronunciation of sibilant sounds.
    • 2007 October 30, C. Claiborne Ray, “Whence the Whistle?”, in New York Times[1]:
      The flaw in pronouncing a sibilant S, which speech therapists call sigmatism, can follow even minor changes to the way the tongue aligns with the teeth.