one sound; a single sound
Refers to a single musical note, a phoneme, or any individual sound. Often used in contexts like music, linguistics, or when emphasizing a solitary sound.
A single piano note echoed in the quiet room.
In this language, a difference of one sound changes the meaning.
monosyllable
Compound of 一 (いち, 'one') and 音 (おん, 'sound'). The reading いちおん follows standard on'yomi combinations.