Virus Definition–noun, plural -rus⋅es. | 1. | an ultramicroscopic (20 to 300 nm in diameter), metabolically inert, infectious agent that replicates only within the cells of living hosts, mainly bacteria, plants, and animals: composed of an RNA or DNA core, a protein coat, and, in more complex types, a surrounding envelope. | | 2. | Informal. a viral disease. | | 3. | a corrupting influence on morals or the intellect; poison. | | 4. | a segment of self-replicating code planted illegally in a computer program, often to damage or shut down a system or network. | |
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Scan Definition–verb (used with object) | 1. | to glance at or over or read hastily: to scan a page. | | 2. | to examine the particulars or points of minutely; scrutinize. | | 3. | to peer out at or observe repeatedly or sweepingly, as a large expanse; survey. | | 4. | to analyze (verse) as to its prosodic or metrical structure; read or recite (verse) so as to indicate or test the metrical form. | | 5. | to read (data) for use by a computer or computerized device, esp. using an optical scanner. | | 6. | Television. to traverse (a surface) with a beam of light or electrons in order to reproduce or transmit a picture. | | 7. | Radar. to traverse (a region) with a beam from a radar transmitter. | | 8. | Medicine/Medical, Biology. to examine (a body, organ, tissue, or other biologically active material) with a scanner. | –verb (used without object) | 9. | to examine the meter of verse. | | 10. | (of verse) to conform to the rules of meter. | | 11. | Television. to scan a surface or the like. | –noun | 12. | an act or instance of scanning; close examination. | | 13. | a visual examination by means of a television camera, as for the purpose of making visible or relaying pictures from a remote place: a satellite scan of the dark side of the moon; video scans of property listings available to customers. | | 14. | a particular image or frame in such video observation or a photograph made from it. | | 15. | Medicine/Medical, Biology. | a. | examination
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of the body or an organ or part, or a biologically active material, by means of a technique such as computed axial tomography, nuclear magnetic resonance, ultrasonography, or scintigraphy. | | b. | the image or display so obtained. | | |
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Software Definition–noun | 1. | Computers. the programs used to direct the operation of a computer, as well as documentation giving instructions on how to use them. Compare hardware (def. 5). | | 2. | anything that is not hardware but is used with hardware, esp. audiovisual materials, as film, tapes, records, etc.: a studio fully equipped but lacking software. | | 3. | Television Slang. prepackaged materials, as movies or reruns, used to fill out the major part of a station's program schedule. | |
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