Clearance can refer to:

  • Authorization or permission from an authority
    • Air traffic control clearance in aviation
    • Security clearance, a status granted to individuals allowing them access to classified information
  • Engineering tolerance, a physical distance or space between two components
    • Ground clearance, the amount of space between the base of an automobile tire and the underside of the chassis
  • Clearance (medicine), the rate at which a substance is removed or cleared from the body by the kidneys or in renal dialysis
  • Clearance rate, in criminal justice, the number of crimes "cleared" divided by the number reported
  • Closeout (sale), in retail, the final sale of items to zero inventory
  • Customs clearance, in international trade, the movement of goods through customs barriers
  • Deforestation, the deliberate clearance of woodland or forest for human development
  • In Australian rules football, the clearing of the ball out of a ball-up situation
  • A chess term for removal of pieces from a rank, file or diagonal so that a bishop, rook or queen is free to move along it
  • The Highland Clearances, forced displacements of people in Scotland in the 18th and 19th centuries
  • Rights clearance, the licensing of copyright and related rights

Other articles related to "clearance":

List Of Gear Nomenclature - Backlash
... In the context of gears backlash, sometimes called lash or play, is clearance between mating components, or the amount of lost motion due to clearance or ... For example, in a pair of gears backlash is the amount of clearance between mated gear teeth ...
Shearing (manufacturing) - Principle
... Usually the clearance between the two is 5 to 10% of the thickness of the material, but dependent on the material ... Clearance is defined as the separation between the blades, measured at the point where the cutting action takes place and perpendicular to the direction of blade movement ... Because of normal inhomogeneities in materials and inconsistencies in clearance between the punch and die, the shearing action does not occur in a uniform manner ...
Creation of Clearance Cairns
... Many clearance stones were used in the construction of defensive structures, houses, farm buildings, walls, drainage ditches, road metalling, etc ... Where permanent clearance cairns were formed it was predominately on waste land, such as steep slopes, edges of woodland, field corners, and around earth-fast ... Some surviving cairns are of considerable antiquity as field clearance has been practised since the beginnings of agriculture in the Stone Age, such as at the Gardberg site in Vestre Slidre ...
Mucociliary Clearance
... Mucociliary clearance, also referred to as mucociliary apparatus or mucociliar clearance (MCC), derived from mucus, cilia (cilia of the tracheal surface ... Important for good mucociliary clearance are the number of cilia, their structure, activity, and coordinated movement ... Optimum functionality of mucociliary clearance presuppose a temperature of 37 °C and an absolute humidity of 44 mg/dm³ corresponding to a relative humidity of 100% ...