Source : Webster's Revised Unabridged Dictionary (1913)

Chromophore \Chro"mo*phore\, n. [Gr. ? color + ? to bear.]
   (Chem.)
   Any chemical group or residue (as {NO2}; {N2}; or {O2}) which
   imparts some decided color to the compound of which it is an
   ingredient.

Source : Free On-Line Dictionary of Computing

O2
     
        Object-Oriented.  {Object-oriented database} language used in
        the {Altair} project.  Implemented as an {interpreter}.  GIP
        Altair, Versailles, France.  Francois Bancilhon et al, in
        Advances in Object-Oriented Database Systems, K.R. Dittrich
        ed, LNCS 334, Springer 1988.  See {CO2}.