tone language definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a language, as Chinese or some Bantu or Southeast Asian languages, in which pitch variation is used to distinguish words that would otherwise sound alike
tone language definition by American Heritage Dictionary
A language, as Mandarin or Somali, in which pitch or the pitch contour distinguishes the meanings of words that are otherwise the same phonologically.