Hydroxyl

2 definitions found

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

  Hydroxyl \Hy*drox"yl\, n. [Hydro-, 2 + oxygen + -yl.] (Chem.)
     A compound radical, or unsaturated group, {HO}, consisting of
     one atom of hydrogen and one of oxygen. It is a
     characteristic part of the hydrates, the alcohols, the oxygen
     acids, etc.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  hydroxyl
       n : the monovalent group -OH in such compounds as bases and some
           acids and alcohols [syn: {hydroxyl group}, {hydroxyl
           radical}]