a language, as Swedish, Chinese, Yoruba, or Serbo-Croatian, in which words that are otherwise phonologically identical are distinguished by having different pitches or pitch contour.
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How to use tone language in a sentence
Yet there is abundant evidence of a tone language among them.The Coming of the Fairies | Arthur Conan Doyle
British Dictionary definitions for tone language
a language, such as Chinese or certain African languages, in which differences in tone may make differences in meaning
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012