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1. Chemistry Having valence 3.
2. Immunology
a. Having three sites of attachment. Used of an antibody or antigen.
b. Containing antigens from three strains of a microorganism or virus. Used of a vaccine or serum.

tri·va′lence, tri·va′len·cy n.
References in periodicals archive ?
1970; Pailler, Jean-Marie, <<La vierge et le serpent: de la trivalence a l'ambiguite>>, MEFRA 109, 1997, 535-559: dello studioso francese, interessante l'indagine comparativa tra il culto di Iuno Sospita a Roma e quello di I^sfa a Lanuvio (ibid.
Meanwhile, Rio Tinto is continuing its exploration with Trivalence on the site of Aredor in Guinea-Conakry where $3.
Authorisation has been received by Trivalence Mining Corp.
Trivalence has a commercial diamond mine on the company's 85%-owned Aredor Diamond Concession in the Republic of Guinea, a 50% interest in the Palmietgat kimberlite project, South Africa--scheduled to be operational in early 2000, and four prospecting licenses in the Kokong kimberlite field, Botswana.