Virus dictionary

By September 10, there was a 44 percent increase in the proportion of people over age 75 who have been diagnosed with the virus compared to the previous week.

These virus es circulate year-round in the tropics but are more common during the rainy season. That is when Eckard Wimmer, a virologist at Stony Brook University, caused a sensation by creating infectious polio virus starting from only genetic instructions. By April, waves of workers who debone chickens or carve up pork elbow-to-elbow with their co-workers were falling ill from the virus. He became delirious, his heartbeat grew ragged, his blood teemed with the virus , and his lungs, liver and kidneys began to fail.

By May 27, five people had succumbed to the virus and 16 more were infected. The current FDA-approved measles vaccine consists of live but weakened measles virus that is injected into the arm. The fact that the virus is still alive has sustained many safety concerns, both rational and irrational, about its use. If there is neuritis from the virus it becomes intense and causes muscular contractions, paresis, and paralysis. The scientists of Sator knew that the virus was virulent; in fact, too virulent for its own good.

They knew that shortly after every Nansalian died, the virus , too, would be dead. It killed the host every time, and the virus could not live outside a living cell. Viruses are the most primitive form of life. They depend on other living cells for their reproduction and growth. A minute organism that consists of a core of nucleic acid surrounded by protein. Viruses, which are so small that a special kind of microscope is needed to view them, can grow and reproduce only inside living cells.

See computer virus. New Word List Word List. Save This Word! See synonyms for virus on Thesaurus. Words nearby virus virulence , virulent , virulent bacteriophage , viruliferous , viruria , virus , virus-associated hemophagocytic syndrome , virus chip , virus keratoconjunctivitis , virusoid , virus punctate keratoconjunctivitis. What is a virus? Why is virus important? Did you know Tierney, owner of John F. Tierney Funeral Home in Manchester, and many families struggled with the loss of human connection that has long been part of the grieving process.

First Known Use of coronavirus , in the meaning defined at sense 1. Learn More About coronavirus. Time Traveler for coronavirus The first known use of coronavirus was in See more words from the same year. From the Editors at Merriam-Webster. Coronavirus and the New Words We Added Style: MLA. Medical Definition of coronavirus.

More from Merriam-Webster on coronavirus Britannica. Get Word of the Day daily email! Test Your Vocabulary. Test your visual vocabulary with our question challenge! Evidence suggested that the AIDS virus was spreading very quickly among the heterosexual community. B2 a disease caused by a virus:. I don't know exactly what's wrong with her - I think she has some kind of virus.

Several employees were off work with a vomiting virus. A local doctor was the first to raise the alarm about this latest virus. The virus is contracted through exchange of bodily fluids. All the tomato plants are infected with a virus. The doctors have attributed the cause of the illness to an unknown virus. It's possible to pass on the virus to others through physical contact.

B1 a computer program or part of a computer program that can make copies of itself and is intended to prevent the computer from working normally. A computer virus may lurk unseen in a computer's memory , calling up and infecting each of the machine's data files in turn. The virus deletes files and corrupts essential core microchips leaving computers unusable.

All their customer information was wiped off the computer by a virus. If you think there may be a virus, don't open the attachment. I got a virus alert when I downloaded my email. A virus is also a disease caused by a virus:. Virus attacks are the largest source of financial loss , followed by unauthorized access.

Compare bug. Trojan horse. See also anti-virus. Examples of virus. Our lab is using viruses of hyperthermophilic organisms to elucidate these limits, and the adaptations of life needed for survival in extreme environments. From the Cambridge English Corpus. Seven different genotypes of lyssaviruses are generally recognized with the classical rabies viruses assigned to genotype 1 []. However, survival times of excreted viruses and protozoa may be long enough to cause a health risk in schemes for wastewater use.

Finally, grazing animals or parasitic viruses or microorganisms can limit photon interception and use.