English Reference
Noun

coronavirus

n. C / U
B2 Upper Intermediate coro·n·avirus

n.a type of virus that can cause illnesses ranging from a common cold to more serious diseases. It gets its name from the crown-like spikes on its surface.

n.any of a group of RNA viruses that cause respiratory and digestive infections in humans and animals. Characterised by a lipid envelope covered with club-shaped projections resembling a solar corona.


SIMPLE

The doctor explained how the coronavirus spreads through the air.

CONTEXTUAL

Public health officials monitored the new coronavirus strain to determine if it caused more severe symptoms than previous versions.

COMPLEX

While many varieties of coronavirus only cause mild upper respiratory tract infections, certain zoonotic strains have crossed the species barrier to cause significant global health emergencies.

In April 2020, she donated $1m to the Vanderbilt University in Tennessee which directly funded coronavirus research that helped develop the Moderna Covid vaccine.

The Guardian· 26 Aug 2026

The vaccine generated immune responses against multiple coronaviruses, including SARS-CoV-2, SARS, and related bat viruses with pandemic potential.

ScienceDaily· 5 Jun 2026

From corona (“crown-like circle of light appearing around the sun”) + virus. Corona is derived from Latin corōna (“garland, wreath; crown”), from Ancient Greek κορώνη (korṓnē, “something curved; curved stern of a ship; end, point, tip”), from Proto-Indo-European *(s)ker- (“to bend, turn”). The name refers to the characteristic appearance of its virions by electron microscopy, which have a fringe of surface projections creating an image reminiscent of a solar corona. Compare the former genus name Coronavirus.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin ine-pro *(s)ker-
Level B2 · Upper Intermediate
Frequency Frequent
Updated