hydroxyl group; hydroxyl radical
Rare chemistry term for the -OH group or radical. Modern usage often prefers ヒドロキシル基 or ヒドロキシ基.
The hydroxyl group is a functional group represented by -OH in chemical formulas.
Compound of 水酸 (suisan, 'hydroxyl', literally 'water acid') + 根 (kon, 'root, radical'). The exact historical derivation is uncertain; the term appears to be a Japanese coinage for the chemical concept.