toneme Syllabification: (ton·eme)Pronunciation: /ˈtōnēm/Definition of toneme noun Phonetics a phoneme distinguished from another only by its tone. Derivatives tonemicPronunciation: /tōˈnēmik/ adjective Origin: 1920s: from tone, on the pattern of phonemetoneme in other Oxford dictionaries Definition of toneme in the British & World English dictionary