About
The character 唑 is a modern phonosemantic compound: the mouth radical 口 provides the semantic category, while 坐 (zuò, 'to sit') supplies the pronunciation. Created for the Chinese chemical nomenclature, it transcribes the '-zole' suffix found in organic chemistry. This suffix refers to azoles, a class of five-membered heterocyclic compounds that contain a nitrogen atom and at least one other non-carbon atom. As a recently invented character, it has no pre-modern literary use, showing how the writing system adapts to scientific needs.
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