| v. |
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abbreviation
- versus
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| vacuum |
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noun (pl=vacuums or vacua; see Usage notes for plurals)
- A region of space that contains no matter.
- A vacuum cleaner.
verb
- (transitive) To clean (something) with a vacuum cleaner.
- (intransitive) To use a vacuum cleaner.
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| valley |
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noun (plural valleys)
- An elongated depression between hills or mountains, often with a river flowing through it.
- The area which drains into a river.
- Any structure resembling 1, e.g., the meeting point of two pitched roofs.
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| Van Allen belt |
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noun van, Van Allen belt
- Either of two torus-shaped areas of high-energy charged particles which partly surround Earth, trapped by its magnetic field. The areas are characterised by intense radiation. When the belts "overload", particles strike the upper atmosphere and fluoresce, causing the polar aurora.
- Any of similar areas around another planet.
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| vapor |
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noun - Cloudy diffused matter such as mist, steam or fumes suspended in the air.
- The gaseous state of a substance that is normally a solid or liquid.
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| vaporization |
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noun
- The conversion of a solid or a liquid into a gas
- The destruction of something by turning it into vapor
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| vaporize |
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verb (vaporiz, ing)
- Turn into vapour.
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| variance |
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noun
- The act of varying or the state of being variable
- A difference between what is expected and what happens
- The state of differing or being in conflict
- A discrepancy, especially between two legal documents
- (statistics) The second central moment in probability
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| vibrate |
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verb (vibrates, vibrating, vibrated)
- Move with small movements rapidly to and fro.
- Resonate.
- Her mind vibrates with excitement.
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| Violet |
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proper noun
- (given name, female) from the English noun violet
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| viscoelastic |
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adjective
- Referring to a material that is viscous and elastic.
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| viscometer |
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noun - (physics) An instrument used to measure the viscosity of a liquid
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| viscose |
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noun
- A viscous orange-brown liquid obtained by chemical treatment of cellulose and used as the basis of manufacturng rayon and cellulose film.
- A fabric made from this material.
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| viscosity |
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noun (viscosities, -)
- (uncountable) The state of being viscous.
- (countable) (physics) A quantity expressing the magnitude of internal friction in a fluid, as measured by the force per unit area resisting uniform flow.
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| viscous |
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adjective
- Having a thick, sticky consistency between solid and liquid; having a high viscosity.
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| visible spectrum |
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noun (infl, en, noun, head=visible spectrum)
- (physics) The portion of the electromagnetic spectrum which is visible to the human eye.
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| volume |
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noun
- A unit of three dimensional measure of space that comprises a length, a width and a height. It is measured in units of cubic centimeters in metric, cubic inches or cubic feet in English measurement. (The room is 9x12x8, so its is 864 cubic feet.)
- Strength of sound. Measured in decibels. (Please turn down the on the stereo.)
- The issues of a periodical over a period of one year. (I looked at this week's copy of the magazine. It was 23, issue 45.)
- A single book of a publication issued in multi-book format, such as an encyclopedia. (The letter "G" was found in 4.)
- A synonym for quantity. (The of ticket sales decreased this week.)
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| volumeter |
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noun
- Any instrument used to measure the volume of a substance
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| volumetric |
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adjective - Pertaining to measurement by volume.
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