benzophenone

/B EH1 N Z OW0 F IY1 N AA0 N/
noun
  1. 1

    (organic chemistry, countable) Any of a class of aromatic ketones based on the parent compound diphenylketone (C₆H₅)₂CO; used, amongst other things, as ingredients in sunblock.

  2. 2

    (organic chemistry, uncountable) The compound diphenylmethanone.

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