Protoxide

1 definition found

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

  Protoxide \Pro*tox"ide\, n. [Proto- + oxide: cf. F. protoxide.]
     (Chem.)
     That one of a series of oxides having the lowest proportion
     of oxygen. See {Proto-}, 2
     (b) .
         [1913 Webster]


  
     {protoxide of nitrogen}, laughing gas, now called
        {hyponitrous oxide}. See under {Laughing}.
        [1913 Webster]