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Glossary of Meteorological Terms
beginning with letter C
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c. Tweet Definition of c. Like Definition of c. on Facebook
  1. (context, preposition) circa
The document was written in the Middle Ages, 1250.
  1. (context, noun) city
calm Tweet Definition of calm Like Definition of calm on Facebook
  1. (in a person) The state of being calm; peacefulness; absence of worry, anger, fear or other strong negative emotion.
  2. (in a place or situation) The state of being calm; absence of noise and disturbance.
  3. A period of time without wind.
  1. (transitive) To make calm.
  2. (intransitive) To become calm.
  1. (context, of a person) peaceful, quiet
  2. (context, of a place or situation) Free of noise and disturbance.
CC Tweet Definition of CC Like Definition of CC on Facebook
  1. carbon copy
  2. (context, medicine) chief complaint
  3. circuit court
  4. cirrocumulus
  5. City College
  6. closed caption
  7. w:Community college, Community College
  8. courtesy copy
  9. Creative Commons
  10. credit card
  11. cubic centimetre
ceiling Tweet Definition of ceiling Like Definition of ceiling on Facebook
noun (plural: ceilings)
  1. The upper limit of an object or action.
price ceilings
  1. The plane or planes that bound the upper limit of a room.
the dining room had an ornate ceiling
  1. (aviation) The highest altitude at which an aircraft may fly.
  2. (mathematics) The smallest integer greater than or equal to a given number.
the ceiling of 4.5 is 5
ceilometer Tweet Definition of ceilometer Like Definition of ceilometer on Facebook
  1. A device that measures the altitude of the cloud base, especially above an airfield
chemosphere Tweet Definition of chemosphere Like Definition of chemosphere on Facebook
  1. the region of the Earth's atmosphere (from 20 to 120 miles above the surface) in which photochemical reactions take place
Chinook Tweet Definition of Chinook Like Definition of Chinook on Facebook
proper noun 
  1. (uncountable) A Native American language of the Penutian family of Oregon and Washington.
cirrocumulus Tweet Definition of cirrocumulus Like Definition of cirrocumulus on Facebook
  1. (context, physics, Meteorology) A principal high-level cloud type appearing as a thin, white patch of cloud without shadows, composed of very small droplets in the form of grains or ripples. The elements may be merged or separate, and more or less regularly arranged; they subtend an angle of less than 1° when observed at an angle of more than 30° above the horizon. Holes or rifts often occur in a sheet of cirrocumulus. Abbreviated Cc.
cirrostratus Tweet Definition of cirrostratus Like Definition of cirrostratus on Facebook
  1. (meteorology) A principal high-level cloud type appearing as a whitish veil, usually fibrous but sometimes smooth, which may totally cover the sky and which often produces halo phenomena, either partially or completely. Sometimes a banded aspect may appear, but the intervals between the bands are filled with thinner cloud veil. The edge of the veil of cirrostratus may be straight and clean-cut, but more often it is irregular and fringed with cirrus. Some of the ice crystals that comprise the cloud are large enough to fall and thereby produce a fibrous aspect. Cirrostratus occasionally may be so thin and transparent as to render it almost indiscernible, especially through haze or at night. At such times, the existence of a halo may be the only revealing feature, such as producing a halo around the moon. Abbreviated: Cs.
climate Tweet Definition of climate Like Definition of climate on Facebook
  1. the weather averaged over a long period of time
  2. The long-term manifestations of weather. The climate of a specified area is represented by the
statistical summary of its weather conditions during a period long enough to ensure that representative
values are obtained (generally 30 years).      
climatic Tweet Definition of climatic Like Definition of climatic on Facebook
  1. of, or relating to, or influenced by climate
climatology Tweet Definition of climatology Like Definition of climatology on Facebook
noun (climatologies)
  1. The science that deals with climates, and investigates their phenomena and causes.
(rfc-level, Translations at L3+)      
cloud Tweet Definition of cloud Like Definition of cloud on Facebook
  1. A visible mass of water droplets suspended in the air.
  2. Any mass of dust, steam or smoke resembling such a mass.
  3. Anything which makes things foggy or gloomy.
  4. A group of objects, especially suspended above the ground or flying.
He opened the door and was greeted by a of bats.
  1. To become foggy or gloomy, to become obscured from sight.
  2. To make obscure (e.g. to cloud the issue).
cloud base Tweet Definition of cloud base Like Definition of cloud base on Facebook
  1. The altitude of the base of a mass of cloud; measured by a ceilometer
cold front Tweet Definition of cold front Like Definition of cold front on Facebook
  1. (Meteorology). A cold front is the leading edge of an advancing mass of cold air.
cold snap Tweet Definition of cold snap Like Definition of cold snap on Facebook
  1. (idiom) A period of exceptionally cold weather.
    A recent damaged citrus crops.
condensation Tweet Definition of condensation Like Definition of condensation on Facebook
  1. The act or process of condensing or of being condensed; the state of being condensed.
  2. The act or process of reducing, by depression of temperature or increase of pressure, etc., to another and denser form, as gas to the condition of a liquid or steam to water.
  3. A rearrangement or concentration of the different constituents of one or more substances into a distinct and definite compound of greater complexity and molecular weight, often resulting in an increase of density, as the condensation of oxygen into ozone, or of acetone into mesitylene.
convection Tweet Definition of convection Like Definition of convection on Facebook
  1. The process of conveying something.
  1. (physics) The transmission of heat in a fluid or gas by the circulation of currents.
  2. (meteorology) The vertical movement of heat and moisture, especially by updrafts and downdrafts in an unstable air mass. The terms convection and thunderstorm are often used interchangeably, although thunderstorms are only one form of convection. Towering cumulus clouds are visible forms of convection.
convergence Tweet Definition of convergence Like Definition of convergence on Facebook
  1. the act of moving toward union or uniformity.
  2. a meeting place
We built a homestead at the of two rivers
  1. the intersection of three electron beams for red, green and blue onto a single pixel in a CRT
  2. (mathematics) the process of approaching some limiting value
  3. (physiology) the coordinated focusing of the eyes, especially at short range
  4. (biology) the evolution of similar structures or traits in unrelated species in similar environments; convergent evolution
  5. the merging of distinct technologies, industries, or devices into a unified whole (ex AT&T buying out every other company to have a monopole as they did in the 1980's and have succeeded into doing once more after the recent purchase of cingular.)
corona Tweet Definition of corona Like Definition of corona on Facebook
noun (plural: coronae or coronas)
  1. A crown or garland bestowed among the Romans as a reward for distinguished services.
  2. (star): The luminous plasma atmosphere of the Sun or other star, extending millions of kilometres into space, most easily seen during a total solar eclipse,
  3. (biology): Any crown-like appendage of a plant or animal.
  4. (electrical): a low energy discharge caused by ionization of a gas by an electric field quite common at conductor bends of 12kV or higher.
crepuscular ray Tweet Definition of crepuscular ray Like Definition of crepuscular ray on Facebook
noun Crepuscular ray
  1. A sunbeam seen just after sunset or just before sunrise, caused by a cloud below the horizon and dust particles in the air above the horizon.
  2. A cloud shadow cast on the bright sky.
cumulonimbus Tweet Definition of cumulonimbus Like Definition of cumulonimbus on Facebook
noun (plural: cumulonimbi)
  1. A cloud, with a tall structure and a flat base, that is often associated with thunderstorms.
cumulus Tweet Definition of cumulus Like Definition of cumulus on Facebook
noun (cumuli)
  1. A large white puffy cloud that develops through convection. On a hot, humid day, they can form towers and even become cumulonimbus clouds.
    • 2007 September 1, "Who"s afraid of Google?: The world"s internet superpower faces testing times", in w:The Economist, The Economist, The Economist Newspaper Ltd, ISSN 0013-0613, volume 384, number 8544, page 9,
    • :Ironically, there is something rather cloudlike about the multiple complaints surrounding Google. The issues are best parted into two cumuli: a set of "public" arguments about how to regulate Google; and a set of "private" ones for Google"s managers, to do with the strategy the firm needs to get through the coming storm.
      1. A mound or heap.
cyclogenesis Tweet Definition of cyclogenesis Like Definition of cyclogenesis on Facebook
  1. (meteorology) the process which leads to the formation of tropical storms, cyclones and hurricanes; typically involves an interaction that leads to vertical wind shear
cyclone Tweet Definition of cyclone Like Definition of cyclone on Facebook
  1. A system of winds rotating around a center of low atmospheric pressure. A cyclone rotates counterclockwise in the northern hemisphere and clockwise in the southern hemisphere (opposite to that of an anticyclone). Modern meteorology restricts the use of the term cyclone to the cyclonic-scale circulations. But, it is still applied popularly to the more or less violent, small-scale circulations such as tornadoes, waterspouts, and dust devils (which may in fact exhibit anticyclonic rotation), and even, very loosely, to any strong wind. Because cyclonic circulation and relative low atmospheric pressure usually coexist, in common practice the terms cyclone and low are used interchangeably. Also, because cyclones nearly always are accompanied by inclement (sometimes destructive) weather, they are frequently referred to simply as storms.
  2. A Southeastern and Indian Ocean weather phenomenon that results in wind speeds of around 150 to 200 km/h.
cyclonic Tweet Definition of cyclonic Like Definition of cyclonic on Facebook
  1. of, or pertaining to a cyclone
  1. (meteorology) rotating in the same direction as the Earth i.e. anticlockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere

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