Dictionary.com
Thesaurus.com

acetylbenzene

American  
[uh-seet-l-ben-zeen, -ben-zeen, uh-set-, as-i-tl-] / əˌsit lˈbɛn zin, -bɛnˈzin, əˌsɛt-, ˌæs ɪ tl- /

noun

Chemistry.
  1. acetophenone.


Etymology

Origin of acetylbenzene

acetyl + benzene