Trional

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Trional \Tri"o*nal\, n. [Pref. tri- + sulphonal; -- so called
     because it contains three ethyls.] (Chem.)
     A compound similar to sulphonal, used as a hypnotic in
     medicine.
     [Webster 1913 Suppl.]