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Meaning of diaphone

di•a•phone

Pronunciation: (dī'u-fōn"), [key]
— n.
  1. a foghorn producing a low-pitched, penetrating signal of two tones.
  2. The broad
    1. a phoneme in one dialect corresponding to a similar but phonetically different phoneme in a related dialect.
    2. a group of sounds comprising all the phonetically different dialectal variants of a given phoneme in a language:The broada and flat a of “half ” are members of a single diaphone.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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