any of a group of viruses including those that in humans cause upper respiratory infections or infectious pinkeye

the RNA virus that causes Lassa fever

a herpes virus that affects the skin and nervous system

respiratory disease characterized by inflammation of the lung parenchyma (excluding the bronchi) with congestion caused by viruses or bacteria or irritants

Any of various plant diseases characterized by yellow or yellowish discoloration of the leaves and caused by phytoplasmas that are transmitted by insects or by certain viruses, The yolk of an egg; the vitellus_ opposed to the white, or the surrounding albumen, One of certain geometrid moths_ an English collectors' name_ as, the speckled yellow, adjective_ Slang Cowardly; hence, dishonorable; mean; contemptible, calisaya bark, Being of a bright saffronlike color; of the color of gold or brass; having the hue of that part of the rainbow, or of the solar spectrum, which is between the orange and the green, intransitive verb_ To become yellow or yellower, transitive verb_ To make yellow; to cause to have a yellow tinge or color; to dye yellow, transitive & intransitive verb_ To make or become yellow

Plural form of virus

Any of various submicroscopic agents that infect living organisms, often causing disease, and that consist of a single or double strand of RNA or DNA surrounded by a protein coat. Unable to replicate without a host cell, viruses are typically not considered living organisms, A computer program or series of commands that can replicate itself and that spreads by inserting copies of itself into other files or programs which users later transfer to other computers. Viruses usually have a harmful effect, as in erasing all the data on a disk, A harmful or destructive influence

Of or relating to the propagation of information, ideas, or trends by means of social networks rather than conventional mass media, virology Of or relating to a biological virus, computing Of the nature of an informatic virus; able to spread copies of itself to other computers, noun_ marketing A video, image or text spread by "word of mouth" on the internet or by e-mail for humorous, political or marketing purposes

A preparation from the cowpox virus that protects against smallpox when administered to an individual, The virus of vaccinia used in vaccination, immunology A substance given to stimulate the body's production of antibodies and provide immunity against a disease, prepared from the agent that causes the disease, or a synthetic substitute

A group of bacteria or viruses that are genetically distinct from other groups of the same species, Any of the various lines of ancestry united in an individual or a family; ancestry or lineage, The tone, tenor, or substance of a verbal utterance or of a particular action or behavior, intransitive verb_ To pass (a liquid) through a filtering agent such as a strainer, To force beyond the proper or reasonable limit, To contract or exert one's muscles to the utmost