Definitions
Etymology phono-semantic
About
The character 羟 was created specifically for modern chemistry to represent the hydroxyl radical, with no basis in classical Chinese. It derives from the traditional form 羥, an example of modern chemical nomenclature. This character synthesizes components from the characters for oxygen (氧) and hydrogen (氢): it takes the top radical 羊 from "oxygen" and combines it with a phonetic element from "hydrogen", forming a conceptual portmanteau that visually represents a group of one oxygen and one hydrogen atom. Its use is confined to organic chemistry as a precise identifier for specific molecular structures, with no general or non-scientific applications.
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