Online Google Dictionary

clearance 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/ˈkli(ə)rəns/,
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clearances, plural;
  1. The action or process of removing or getting rid of something or of something's dispersing
    • - cleaning of the machine should include clearance of blockages
    • - there will be sunny intervals after clearance of any early mist
  2. The removal of buildings, people, or trees from land so as to free it for alternative uses
    • - slum clearance accelerated during the 1960s
    • - forest clearances
  3. (in soccer and other games) A kick or hit that sends the ball out of a defensive zone

  4. Official authorization for something to proceed or take place
    • - getting diplomatic clearance to fly into or over a country is not always easy
  5. Official permission for someone to have access to classified information
    • - these people don't have clearance
  6. Permission for an aircraft to take off or land at an airport
    • - he took off without air traffic clearance
  7. The clearing of a person or ship by customs

  8. A certificate showing that such clearance has been granted

  9. The process of clearing checks through a clearinghouse

  10. Clear space allowed for a thing to move past or under another
    • - always give cyclists plenty of clearance
  1. the distance by which one thing clears another; the space between them
  2. headroom: vertical space available to allow easy passage under something
  3. permission to proceed; "the plane was given clearance to land"
  4. In medicine, the clearance is a measurement of the renal excretion ability. Although clearance may also involve other organs than the kidney, it is almost synonymous with renal clearance or renal plasma clearance. ...
  5. The Highland Clearances (Fuadach nan Gàidheal, the expulsion of the Gael) were forced displacements of the population of the Scottish Highlands during the 18th and 19th centuries. They led to mass emigration to the sea coast, the Scottish Lowlands and the North American colonies. ...
  6. The act of clearing or something (such as a space) cleared; The distance between two moving objects, especially between parts of a machine; The height or width of a tunnel, bridge or other passage, or the distance between a vehicle and the walls or roof of such passage; a gap, headroom; A ...
  7. (Clearances) A clearance (or isolation) is a term used to describe the space from a power or ground layer to a plated through hole. To prevent shorting, ground and power layer clearances need to kept to a minimum over the finished hole.
  8. (Clearances) The minimum distances that need to be maintained from electric utility lines for safety purposes, they are set by various governmental entities.
  9. (Clearances) You’ll need to know your clearances before you start your garage door installation. That refers to how much backroom, headroom and sideroom, or the distance around the walls of the garage, is needed to efficiently install your door.
  10. (Clearances) means removing stones, sticks, or other objects between your taw and the ducks.
  11. The minimum distance through air measured between the surface of something heat-producing and the surface of something combustible.
  12. The process by which a vehicle reviews an advertisement for legal, ethical, and taste standards, before accepting the ad for publication.
  13. the distance between the building’s floor and effective storage ceiling.
  14. A document stating that a shipment is free to be imported into the country after all legal requirements have been met.
  15. A term used by short-form media buyers to indicate which part of their media order, or campaign, in any given day or week was actually broadcast.
  16. The shortest distance between the lowest portion of a sign or awning and the finished grade level. Also called height above grade.
  17. The limiting dimensions of a rail shipment that would allow/prevent its clearing of tunnels and bridges.
  18. the distance required by building and fire codes between stove, smoke pipe or chimney and combustible materials such as wood furniture or carpets. ...
  19. Distance from wall to back of the rod.
  20. The process of transmitting, reconciling, and in some cases, confirming payments orders or financial instrument transfer instructions prior to settlement.
  21. A procedure used to establish, under tightly controlled discipline, a safe environment for maintenance, repair, or inspection. It includes systematically isolating pertinent equipment from all sources of hazardous energy (hydraulic, electrical, mechanical, pneumatic, chemical, etc. ...
  22. the accomplishment of the Customs formalities necessary to allow goods to enter home use, to be exported or to be placed under another Customs procedure.
  23. Adequate space allowed for installation of insulation materials.
  24. Average number of days necessary for deposited checks to pass through a clearing house (decided by contract, usually 3 to 5 days).
  25. Under the Basic Safety Standards Directive [see BSS] contaminated materials and wastes from nuclear licensed sites will be subject to thresholds expressed in terms of Becquerels per unit mass. ...