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Jyutping cyun4
Pinyin chuò

Definitions (Wiktionary)
  1. character, obsolete
    change in the flavour of wine (which may be due to the formation of aldehydes, from which its modern mean may be derived.)
  2. character, obsolete
    pickled vegetables

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Jyutping cyun4
Pinyin quán

Definitions (Wiktionary)
  1. character
    aldehyde
Definitions (Unihan)
  1. aldehyde
  2. Cangjie Input
    MWTOG

醛 [-]

Jyutping
Pinyin quán

Definitions (CC-CEDICT)
  1. aldehyde