Betacoronavirus the Latin “corona” meaning crown or halo, referring to their image under electron microscopy of crown-like spikes on their surface similar to the solar corona. This morphology is created by the viral spike (S) peplomers, which are proteins that populate the surface of the virus and determine host tropism. The order Nidovirales is named for the Latin nidus, which means nest. It refers to this order’s production of a 3' co-terminal nested set of subgenomic mRNA's during infection. Betacoronavirus Betacoronaviruses are one of four genera of coronaviruses of the subfamily "Coronavirinae" in the family "Coronaviridae", of the order "Nidovirales". They
Latin word order nuances of meaning and emphasis. As the authors of "Latin Word Order", Devine and Stephens, put it: "Word order is not a subject which anyone reading Latin can afford to ignore. ... Reading a paragraph of Latin without attention to word order entails losing access to a whole dimension of meaning." One important advantage of studying word order in Latin is that it helps the reader to understand the author's meaning more clearly. Thus for example "complosit Trimalchio manus" doesn't merely mean "Trimalchio clapped his hands", but the initial verb implies a sudden action: "Trimalchio suddenly clapped his hands". In