coronavirus

noun

co·​ro·​na·​vi·​rus kə-ˈrō-nə-ˌvī-rəs 

plural coronaviruses

1

: any of a family (Coronaviridae) of large single-stranded RNA viruses that have a lipid envelope studded with club-shaped spike proteins, infect birds and many mammals including humans, and include the causative agents of MERS, SARS, and COVID-19

Coronaviruses can cause a variety of illnesses in animals, but in people coronaviruses cause one-third of common colds and sometimes respiratory infections in premature infants.

—Rob Stein

… in 2003 a previously unknown coronavirus caused an outbreak of SARS in humans.

—Ali Moh Zaki et al.

—abbreviation CoV, CV

2

: an illness caused by a coronavirus

especially : covid-19

Italy has seen the most coronavirus cases in Europe, with more than 2,000 people ill and 76 deaths associated with COVID-19.

—Dayton (Ohio) Daily News

—abbreviation CV

Examples of coronavirus in a Sentence

Recent Examples on the Web

In April 2023, states began ending continuous enrollment for Medicaid, which became law during the coronavirus pandemic to prevent Americans from losing health care during that time. —Jason Fields, Newsweek, 5 Dec. 2024

Before this year, the only quarterly losses for GM in China since 2009 were a $167 million shortfall during the first quarter of 2020 due to the coronavirus pandemic and an $87 million loss during the second quarter of 2022. —Michael Wayland, CNBC, 4 Dec. 2024

Prior to this year, the only quarterly losses for GM in China since 2009 were a $167 million shortfall during the first quarter of 2020 due to the coronavirus pandemic and an $87 million loss during the second quarter of 2022. —Michael Wayland, NBC News, 4 Dec. 2024

Absenteeism, accounting for 15% of a school's score, was a key factor in the decline, as it had previously been removed from the formula to account for the coronavirus pandemic. —Todd Karpovich, Baltimore Sun, 3 Dec. 2024

Word History

Etymology

corona + virus, later taken as New Latin

Note: The word was introduced by a group of virologists as a short article "Coronaviruses" in the "News and Views" section of Nature (vol. 220, no. 5168, November 16, 1968, p. 650): "… avian infectious bronchitis virus has a characteristic electron microscopic appearance resembling, but distinct from, that of myxoviruses. Particles are more or less rounded in profile … there is also a characteristic 'fringe' of projections 200 Å long, which are rounded or petal shaped, rather than sharp or pointed, as in the myxoviruses. This appearance, recalling the solar corona, is shared by mouse hepatitis virus … . In the opinion of the eight virologists these viruses are members of a previously unrecognized group which they suggest should be called the coronaviruses, to recall the characteristic appearance by which these viruses are identified in the electron microscope."

First Known Use

1968, in the meaning defined at sense 1

Phrases Containing coronavirus

• coronavirus disease 2019

Kids Definition

coronavirus

noun

co·​ro·​na·​vi·​rus

kə-ˈrō-nə-ˌvī-rəs

1

: a virus that infects birds and many mammals including humans

2

: an illness caused by a coronavirus

especially : covid-19

Medical Definition

coronavirus

noun

co·​ro·​na·​vi·​rus kə-ˈrō-nə-ˌvī-rəs 

1

: any of a family (Coronaviridae) of large, single-stranded, RNA viruses that have a lipid envelope studded with club-shaped spike proteins , infect birds and many mammals including humans, and include the causative agents of blue comb, feline infectious peritonitis, COVID-19, MERS, and SARS

Coronaviruses can cause a variety of illnesses in animals, but in people coronaviruses cause one-third of common colds and sometimes respiratory infections in premature infants.

—Rob Stein, The Washington Post

—abbreviation CoV, CV

2

: an illness caused by a coronavirus

especially : covid-19

—abbreviation CV