IPA: /təˈnɛmɪk/
KK: /tʌˈnɛmɪk/
Relating to the use of tone in language, especially in languages that have tonemes, which are variations in pitch that can change the meaning of words.
Mandarin is a tonemic language, where the tone used can change the meaning of a word entirely.
Tonic comes from the Greek word "tonikos" (meaning stretching or tension) and the suffix "-ic" (meaning pertaining to). The word "tonemic" refers to something that pertains to tone or tension, especially in a musical or physiological context.
Think of 'tonic' as relating to 'tension' or 'stretching' — so 'tonemic' means something that relates to tone or tension.