IPA: /ˌmaɪ.kroʊˈtoʊ.nəl/
KK: /maɪkroʊˈtoʊnəl/
Relating to musical notes that are smaller than the standard semitones used in Western music.
The composer experimented with microtonal scales to create unique sounds.
Microtonal → It is formed from "micro-" (from Greek "mikros", meaning small) and "tonal" (from Latin "tonalis", meaning relating to tone). The word "microtonal" refers to music that uses intervals smaller than the conventional semitones, hence relating to small tones.
Think of 'small' ('micro-') tones ('tonal') to remember that 'microtonal' refers to music with very small intervals.
No commonly confused words.