ac·yl /ˈæsəl/
  □; □; □基; □基
  ac·yl /ˈæsəl, ɪl; ˈesəl/ 名詞
  基
  Ac·yl n.   Org. Chem. An acid radical, as acetyl, malonyl, or benzoyl.  An acyl radical can be depicted as R-CO-, where -CO- is the carbonyl group, and R is the group that characterizes the acyl moiety.
  ◄ ►
  acyl
       n : any group or radical of the form RCO- where R is an organic
           group; "an example of the acyl group is the acetyl group"
           [syn: acyl group]