Coronavirus Coronavirus Coronaviruses are species of virus belonging to the subfamily "Coronavirinae" in the family "Coronaviridae", in the order Nidovirales. Coronaviruses are enveloped viruses with a positive-sense single-stranded RNA genome and with a nucleocapsid of helical symmetry. The genomic size of coronaviruses ranges from approximately 26 to 32 kilobases, the largest for an RNA virus. The name "coronavirus" is derived from the Latin "corona", meaning crown or halo, and refers to the characteristic appearance of virions under electron microscopy (E.M.) with a fringe of large, bulbous surface projections creating an image reminiscent of a royal crown or of the solar corona.
Latin word order "nobody has yet succeeded in unifying the insights of all the different scholarly approaches to the fascinating and peculiar problem of Latin word order". In his view an approach which combines the various schools of thought on Latin word order "may succeed in finding a more satisfactory solution". Several recent books, such as those of Panhuis and Spevak, have analysed Latin sentences from a pragmatic point of view. Syntactic approaches traditionally analyse a sentence into Subject and Predicate, but a pragmatic analysis considers a sentence from the point of view of Topic and Focus (or Theme and Rheme, as Panhuis