1) amount of open space between a tree or tree part and another object. the ground. or pedestrian or vehicle traffic on the ground. 2) in an electric utility system and utility arboriculture. the distance between trees and utility lines (especially poles. crossarms. and conductors). 3) the creation or maintenance of these distances by qualified line-clearance personnel; line clearance work.
Merriam-Webster Online Dictionary
clearance (noun)1.
an act or process of as - clearing
a) the removal of buildings from an area (as a city slum)
b) the act of clearing a ship at the customhouse , also the papers showing that a ship has - cleared
c) the offsetting of checks and other claims among banks through a - clearinghouse
d) certification as of objection - clear authorization security clearance
e) a sale to clear out stock
f) authorization for an aircraft to proceed especially with a specified action - clearance to land
2.
the distance by which one object another or the clear space between them - clears
3.
the volume of blood or plasma that can be freed of a specified constituent in a specified time by its excretion into the urine through the kidneys - a creatine clearance of 25 milliliters per minute called also renal clearance
clearance (Wikipedia)
Look up clearance in Wiktionary, the free dictionary. |
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
- Cheque clearing, the process of transferring value on a cheque from one bank account to another
- Engineering tolerance, a physical distance or space between two components
- Ride height (vehicle clearance)
- Hydraulic clearance, valve clearance
- Clearance in civil engineering
- Ground clearance, the amount of space between the base of an automobile tire and the underside of the chassis
- The difference between the loading gauge and the structure gauge, the amount of space between the top of a rail car and the top of a tunnel or the bottom of a rail car and the top of rail
- Air draft, applies to bridges across navigable waterways
- Clearance car
- Clearance (pharmacology), 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, eviction of tenants in the Scottish Highlands during the 18th and 19th centuries
- Market clearing or equilibrium price, the price at which quantity supplied is equal to quantity demanded
- Collective rights management, the licensing of copyright and related rights