English

Noun

benzophenone ‎(countable and uncountable, plural benzophenones)

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. (organic chemistry, uncountable) The compound diphenylmethanone.