Aviation dictionary. 2014.
Clearance (medicine) — 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. Each substance has a specific… … Wikipedia
clearance — UK [ˈklɪərəns] / US [ˈklɪrəns] noun Word forms clearance : singular clearance plural clearances 1) a) [uncountable] official permission that allows someone to do something, to go to a particular country, or to be told particular information Aid… … English dictionary
“clearance cancelled...” — An expression used in radio communications to indicate a time specified by an ATC (air traffic control) unit at which a clearance ceases to be valid unless the aircraft concerned has already taken action to comply with it. This expression is used … Aviation dictionary
Security clearance — For use by the United Nations, see Security Clearance (UN) A security clearance is a status granted to individuals allowing them access to classified information, i.e., state secrets, or to restricted areas after completion of a thorough… … Wikipedia
Hydraulic clearance — Hydraulic clearance. Flow in narrow clearances are of vital importance in hydraulic system component design. The flow in a narrow circular clearance of a spool valve can be calculated according to the formula below if the height is negligible… … Wikipedia
UK Ancestry Entry Clearance — A UK Ancestry Entry Clearance often referred to as an Ancestry Visa is a United Kingdom Entry Clearance for Commonwealth citizens with a grandparent born in the United Kingdom, Channel Islands or Isle of Man who wish to work in the United Kingdom … Wikipedia
Broadcast Advertising Clearance Centre — The Broadcast Advertising Clearance Centre (BACC) was an NGO which until December 31 2007 pre approved most British television advertising. The work of the BACC has been taken over by Clearcast Ltd.BACC approval was applied both to scripts and to … Wikipedia
Security modes — Generally, Security modes refer to information systems security modes of operations used in mandatory access control (MAC) systems. Often, these systems contain information at various levels of security classification. The mode of operation is… … Wikipedia
Schengen Agreement — The term Schengen Agreement is used for two agreements concluded among European states in 1985 and 1990 which deal with the abolition of systematic border controls among the participating countries. By the Treaty of Amsterdam, the two agreements… … Wikipedia
Polygraph — This article is about the forensic instrument. For the automatic signing instrument, see Autopen. For the dual pen device that produces a simultaneous copy of an original while it is written in cursive writing, see Polygraph (duplicating device) … Wikipedia
