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.
Origin of tone language
First recorded in 1905–10
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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