The Collaborative International Dictionary of English v.0.48:
organometallic \or`ga*no*me*tal"lic\, a. (Chem.)
Pertaining to, or denoting, any one of a series of compounds
of certain metallic elements bound to organic radicals; such
as, methylmercury, zinc methyl, sodium ethyl, etc.; formerly
refered to as metalorganic.
[1913 Webster +PJC] Organon
The Collaborative International Dictionary of English v.0.48:
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.; now usually organometallic.
[Written also metallorganic.]
[1913 Webster]