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Jyutping aa1 ding1 ding6
Pinyin ā dīng dìng

Definitions (Wiktionary)
  1. noun
    azetidine

吖丁啶 [---]

Jyutping
Pinyin ā dīng dìng

Definitions (CC-CEDICT)
  1. azetidine (chemistry) (loanword)