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 based, and establishing what nuances of meaning or emphasis could be obtained by using different word orders. Two major recent works on Latin word order, based on different approaches, are those of Devine and Stephens (2006) and Olga Spevak (2010). It is generally agreed that pragmatic factors play a major role in Latin word order, that is, factors such as topic and focus, contrast, emphasis, and heaviness. The topic (what is being talked about) often tends to come at the beginning of the sentence, and the focus (what is said about the topic) at the end or in penultimate position.