丁二酮

dīng'èrtóng
  1. (organic chemistry) butanedione; diacetyl
  2. butanedione; diacetyl

Wiktionary

Entry Composition

=1 丁 Dīng surname Ding
=1 丁 dīng
  1. male adult
  2. the 4th of the 10 Heavenly Stems 天干 tiāngān
  3. fourth (used like "4" or "D")
  4. small cube of meat or vegetable
  5. (literary) to encounter
  6. (archaic) ancient Chinese compass point: 195°
  7. (chemistry) butyl
=1 丁 zhēng used in 丁丁 zhēngzhēng
2 二 èr
  1. two
  2. 2
  3. (Beijing dialect) stupid
=3 酮 tóng ketone
=3 酮 dòng
  1. (obsolete on its own in Standard Chinese, of alcohol, vinegar) to spoil; to go bad
  2. to spoil; to go bad
=3 酮 chóng
  1. (obsolete on its own in Standard Chinese, of alcohol) to become sour
  2. to become sour