Source : Webster's Revised Unabridged Dictionary (1913)

Metalorganic \Met`al*or*gan"ic\, a. [Metal, L. metallum + E.
   organic.] (Chem.)
   Pertaining to, or denoting, any one of a series of compounds
   of certain metallic elements with organic radicals; as, zinc
   methyl, sodium ethyl, etc. [Written also {metallorganic}.]