The name "coronavirus" is derived from the Latin corona and the Greek κορώνη (korṓnē, "garland, wreath"), meaning crown or halo. The name refers to the characteristic appearance of virions (the infective form of the virus) by electron microscopy, which have a fringe of large, bulbous surface projections creating an image reminiscent of a crown or of a solar corona. This morphology is created by the viral spike (S) peplomers, which are proteins on the surface of the virus that determine host tropism. Phylum:<i>Nidovirales</i>Fzọ Subfamily:Orthocoronavirinae Koronavirọses bụ otu nje na-akpata ọrịa na anụmanụ n' ụmụ nnụnụ. N'ime mmadụ, koronavirọs na-ebute ọrịa na- efe efe na-adịkarị nwayọ, dịka azụmazụ nkịtị, ọ bụ ezie n' ọria oyi nkiti dịka SARS, MERS na COVID-19 nwere ike igbu egbu. Mgbaàmà ha di iche iche n'ihe di ndụ : na ọkụkọ, ha na-ebute ọrịa akụkụ okuku ume elu, ebe ehi na ezì ha na-ebute ọnya afọ . Enweghị ọgwụ mgbochi ma ọ bụ ọgwụ mgbochi iji gbochie ma ọ bụ gwọọ ọrịa koronavirọs mmadụ.