clearance

play
noun clear·ance \ ˈklir-ən(t)s \

Definition of clearance

1 :an act or process of clearing: such as
a :the removal of buildings from an area (such 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 clear of objection :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 clears another or the clear space between them
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

Examples of clearance in a Sentence

  1. She has a security clearance that allows her to see the classified information.

  2. The pilot got clearance to land.

  3. That flight has not received clearance for landing.

  4. There was only 10 inches of clearance between the car and the side of the tunnel.

  5. a bridge with a 100-foot clearance above the water

  6. the clearance of forests for farming

  7. slum clearance to make room for new housing

Recent Examples of clearance from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'clearance.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of clearance

1540

Other Aeronautics/Aerospace Terms



CLEARANCE Defined for English Language Learners

clearance

play
noun

Definition of clearance for English Language Learners

  • : an official decision saying that someone has permission to do something

  • : official permission for an aircraft, pilot, etc., to do something

  • : the amount of space between two things


CLEARANCE Defined for Kids

clearance

play
noun clear·ance \ ˈklir-əns \

Definition of clearance for Students

1 :the act or process of removing something
2 :the distance by which one object avoids hitting or touching another
3 :official permission
  • The plane has clearance to land.

Medical Dictionary

clearance

play
noun clear·ance \ ˈklir-ən(t)s \

medical Definition of clearance

:the volume of blood or plasma that could be freed of a specified constituent in a specified time (usually one minute) by excretion of the constituent into the urine through the kidneys called also renal clearance


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