Polyphage are genomic multimers of bacteriophage in which multiple viral particles are all encapsulated, one after the other, within the same set of coat proteins. This phenomenon is characteristic of filamentous phage.[1][2]
^Lopez, J; Webster, RE (May 1983). "Morphogenesis of filamentous bacteriophage f1: orientation of extrusion and production of polyphage". Virology. 127 (1): 177–93. doi:10.1016/0042-6822(83)90382-3. PMID6858000.