| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a stew of meat, vegetables, potatoes, etc. |
coronavirus co·ro·na·vi·rus (kə-rō'nə-vī'rəs)
n.
Any of various single-stranded, RNA-containing viruses that cause respiratory infection in humans and resemble a crown when viewed under an electron microscope because of their petal-shaped projections.