About
The character 呤 is a phono-semantic compound with the radical 口 (mouth) on the left providing the semantic category and the component 令 on the right acting as a phonetic indicator. Historically, it occasionally described whispering or speaking in a low voice. In modern usage, it is primarily employed for scientific transliteration, specifically as the phonetic component in the chemical term for purine (嘌呤) in biochemistry, having largely diverged from its original vocal meaning.