Taxon name: Mesoniviridae

from the Ancient Greek μέσος (mésos), meaning "middle", and Nidovirales, referring to the  genome size of viruses in the family, relative to other nidoviruses; the suffix -viridae for family taxa

 ICTV Report:  Created in Proposal: 2017.012_015S.A.v1.Nidovirales.zip   Reference: