| acyclovir | (noun) an oral antiviral drug (trade name Zovirax) used to treat genital herpes; does not cure the disease but relieves the symptoms | Synonyms: Zovirax |
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| adenovirus | (noun) any of a group of viruses including those that in humans cause upper respiratory infections or infectious pinkeye | - |
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| alphavirus | (noun) an arbovirus of the family Togaviridae that can cause a variety of encephalitis in horses | - |
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| antiviral | (noun) any drug that destroys viruses | Synonyms: antiviral agent, antiviral drug |
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| arborvirus | (noun) a large heterogeneous group of RNA viruses divisible into groups on the basis of the virions; they have been recovered from arthropods, bats, and rodents; most are borne by arthropods; they are linked by the epidemiologic concept of transmission between vertebrate hosts by arthropod vectors (mosquitoes, ticks, sandflies, midges, etc.) that feed on blood; they can cause mild fevers, hepatitis, hemorrhagic fever, and encephalitis | Synonyms: arbovirus |
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| arbovirus | (noun) a large heterogeneous group of RNA viruses divisible into groups on the basis of the virions; they have been recovered from arthropods, bats, and rodents; most are borne by arthropods; they are linked by the epidemiologic concept of transmission between vertebrate hosts by arthropod vectors (mosquitoes, ticks, sandflies, midges, etc.) that feed on blood; they can cause mild fevers, hepatitis, hemorrhagic fever, and encephalitis | Synonyms: arborvirus |
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| arenavirus | (noun) animal viruses belonging to the family Arenaviridae | - |
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| bunyavirus | (noun) an animal virus belonging to the family Bunyaviridae; can be used as a bioweapon | - |
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| coronavirus | (noun) a viral disease caused by SARS-CoV-2 that caused a global pandemic in 2020 | Synonyms: 2019-nCoV acute respiratory disease, corona, coronavirus disease 2019, COVID-19, novel coronavirus pneumonia, Wuhan coronavirus, Wuhan flu, Wuhan pneumonia, Wuhan virus |
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| coxsackievirus | (noun) enterovirus causing a disease resembling poliomyelitis but without paralysis | Synonyms: Coxsackie virus |
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| cytomegalovirus | (noun) any of a group of herpes viruses that enlarge epithelial cells and can cause birth defects; can affect humans with impaired immunological systems | Synonyms: CMV |
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| delavirdine | (noun) a non-nucleoside reverse transcriptase inhibitor (trade name Rescriptor) used to treat AIDS and HIV | Synonyms: Rescriptor |
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| echovirus | (noun) any of a group of viruses associated with various diseases including viral meningitis and mild respiratory disorders and diarrhea in newborn infants | - |
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| enterovirus | (noun) any of a group of picornaviruses that infect the gastrointestinal tract and can spread to other areas (especially the nervous system) | - |
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| environment | (noun) the area in which something exists or lives | Synonyms: environs, surround, surroundings |
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| (noun) the totality of surrounding conditions | - |
| environmentalism | (noun) the activity of protecting the environment from pollution or destruction | - |
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| (noun) the philosophical doctrine that environment is more important than heredity in determining intellectual growth | - |
| environmentalist | (noun) someone who works to protect the environment from destruction or pollution | Synonyms: conservationist |
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| environs | (noun) the area in which something exists or lives | Synonyms: environment, surround, surroundings |
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| (noun) an outer adjacent area of any place | Synonyms: purlieu |
| filovirus | (noun) animal viruses belonging to the family Filoviridae | - |
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| flavivirus | (noun) animal viruses belonging to the family Flaviviridae | - |
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| hepadnavirus | (noun) a group of animal DNA viruses including viruses of ducks and woodchucks and squirrels and others as well as the virus causing hepatitis B in humans | - |
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| indinavir | (noun) a protease inhibitor (trade name Crixivan) used for treating HIV | Synonyms: Crixivan |
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| levirate | (noun) the biblical institution whereby a man must marry the widow of his childless brother in order to maintain the brother's line | - |
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| lyssavirus | (noun) a neurotropic non-arbovirus of the family Rhabdoviridae that causes rabies | - |
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| myxovirus | (noun) any of a group of RNA viruses including those that cause influenza and mumps | - |
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| nelfinavir | (noun) a protease inhibitor (trade name Viracept) used in treating HIV usually in combination with other drugs | Synonyms: Viracept |
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| nevirapine | (noun) a non-nucleoside reverse transcriptase inhibitor (trade name Viramune) used to treat AIDS and HIV | Synonyms: Viramune |
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| orthomyxovirus | (noun) a group of viruses including those causing influenza | - |
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| oviraptorid | (noun) advanced carnivorous theropods, characterized by their toothless, parrot-like beaks and, in several cases, elaborate crests | - |
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| papovavirus | (noun) any of a group of animal viruses associated with or causing papillomas or polyomas | - |
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| paramyxovirus | (noun) a group of viruses including those causing mumps and measles | - |
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| parvovirus | (noun) any of a group of viruses containing DNA in an icosahedral protein shell and causing disease in dogs and cattle; not known to be associated with any human disease | Synonyms: parvo |
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| picornavirus | (noun) a group of single-strand RNA viruses with a protein coat | - |
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| poliovirus | (noun) the virus causing poliomyelitis | - |
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| poxvirus | (noun) any of a group of viruses that can cause pox diseases in vertebrates | - |
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| provirus | (noun) cDNA copy of the RNA genome of a retrovirus; the genetic material of a virus as incorporated into and able to replicate with the genome of a host cell | - |
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| quadrumvirate | (noun) a group of four men | - |
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| reovirus | (noun) any of a group of non-arboviruses including the rotavirus causing infant enteritis | - |
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| retrovirus | (noun) any of a group of viruses that contain two single-strand linear RNA molecules per virion and reverse transcriptase (RNA to DNA); the virus transcribes its RNA into a cDNA provirus that is then incorporated into the host cell | - |
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| rhabdovirus | (noun) any of a group of arboviruses including those causing rabies | - |
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| rhinovirus | (noun) any of a group of picornaviruses that are responsible for many upper respiratory infections | - |
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| ribavirin | (noun) an inhaled antiviral agent (trade name Virazole) that may be used to treat serious virus infections | Synonyms: Virazole |
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| ritonavir | (noun) a protease inhibitor (trade name Norvir) used in treating HIV | Synonyms: Norvir |
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| rotavirus | (noun) the reovirus causing infant enteritis | - |
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| saquinavir | (noun) a weak protease inhibitor (trade name Invirase) used in treating HIV | Synonyms: Invirase |
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| triumvir | (noun) one of a group of three sharing public administration or civil authority especially in ancient Rome | - |
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| triumvirate | (noun) a group of three men responsible for public administration or civil authority | - |
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| vesiculovirus | (noun) an animal virus that causes vesicular stomatitis | - |
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| viraemia | (noun) the presence of a virus in the blood stream | Synonyms: viremia |
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| virago | (noun) a noisy or scolding or domineering woman | - |
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| (noun) a large strong and aggressive woman | Synonyms: amazon |
| viremia | (noun) the presence of a virus in the blood stream | Synonyms: viraemia |
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| vireo | (noun) any of various small insectivorous American birds chiefly olive-grey in color | - |
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| virga | (noun) light wispy precipitation that evaporates before it reaches the ground (especially when the lower air is low in humidity) | - |
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| virgin | (noun) a person who has never had sex | - |
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| virginal | (noun) a legless rectangular harpsichord; played (usually by women) in the 16th and 17th centuries | Synonyms: pair of virginals |
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| virginity | (noun) the condition or quality of being a virgin | - |
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| virgule | (noun) a punctuation mark (/) used to separate related items of information | Synonyms: diagonal, separatrix, slash, solidus, stroke |
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| viricide | (noun) an agent (physical or chemical) that inactivates or destroys viruses | Synonyms: virucide |
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| viridity | (noun) green color or pigment; resembling the color of growing grass | Synonyms: green, greenness |
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| virilisation | (noun) the abnormal development of male sexual characteristics in a female (usually as the result of hormone therapies or adrenal malfunction) | Synonyms: masculinisation, masculinization, virilization |
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| virilism | (noun) the development of male secondary sexual characteristics in a female (or prematurely in a young boy) | - |
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| virility | (noun) the trait of being manly; having the characteristics of an adult male | Synonyms: manfulness, manliness |
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| (noun) the masculine property of being capable of copulation and procreation | - |
| virilization | (noun) the abnormal development of male sexual characteristics in a female (usually as the result of hormone therapies or adrenal malfunction) | Synonyms: masculinisation, masculinization, virilisation |
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| virino | (noun) (microbiology) a hypothetical infectious particle thought to be the cause of scrapie and other degenerative diseases of the central nervous system; consists of nucleic acid in a protective coat of host cell proteins | - |
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| virion | (noun) (virology) a complete viral particle; nucleic acid and capsid (and a lipid envelope in some viruses) | - |
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| viroid | (noun) the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat | Synonyms: virusoid |
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| virologist | (noun) a specialist in virology | - |
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| virology | (noun) the branch of medical science that studies viruses and viral diseases | - |
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| virtu | (noun) objet d'art collectively (especially fine antiques) | - |
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| (noun) artistic quality | Synonyms: vertu |
| (noun) love of or taste for fine objects of art | Synonyms: connoisseurship, vertu |
| virtue | (noun) the quality of doing what is right and avoiding what is wrong | Synonyms: moral excellence, virtuousness |
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| (noun) morality with respect to sexual relations | Synonyms: chastity, sexual morality |
| (noun) any admirable quality or attribute | Synonyms: merit |
| (noun) a particular moral excellence | - |
| virtuosity | (noun) technical skill or fluency or style exhibited by a virtuoso | - |
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| virtuoso | (noun) someone who is dazzlingly skilled in any field | Synonyms: ace, adept, champion, genius, hotshot, maven, mavin, sensation, star, superstar, whiz, whizz, wiz, wizard |
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| (noun) a musician who is a consummate master of technique and artistry | - |
| virtuousness | (noun) the quality of doing what is right and avoiding what is wrong | Synonyms: moral excellence, virtue |
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| virucide | (noun) an agent (physical or chemical) that inactivates or destroys viruses | Synonyms: viricide |
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| virulence | (noun) extreme harmfulness (as the capacity of a microorganism to cause disease) | Synonyms: virulency |
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| (noun) extreme hostility | Synonyms: virulency |
| virulency | (noun) extreme harmfulness (as the capacity of a microorganism to cause disease) | Synonyms: virulence |
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| (noun) extreme hostility | Synonyms: virulence |
| virus | (noun) (virology) ultramicroscopic infectious agent that replicates itself only within cells of living hosts; many are pathogenic; a piece of nucleic acid (DNA or RNA) wrapped in a thin coat of protein | - |
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| (noun) a software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer | Synonyms: computer virus |
| (noun) a harmful or corrupting agency | - |
| virusoid | (noun) the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat | Synonyms: viroid |
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