1) Many-sided 2) Multilateral 1) Multilateral 
Multipartite is a class of virus that have segmented nucleic acid genome. Only a few ssDNA viruses have multipartite genome, but a lot more RNA viruses have multipartite genome. An advantage of multipartite genome is its ability to synthesize multiple mRNA strands to avoid the cellular constraint of monocistronicity. ...
• (a.) Divided into many parts; having several parts.
Mul·tip'ar·tite adjective [ Latin multipartitus multus much, many partitus divided, past participle : confer French multipartite . See Partite .] Divided into many parts; having several parts. 
[adj] - involving more than two parties
adjective involving more than two parties
divided into several or many parts; having several or many divisions. · multilateral (def. 2).