Definition of clearance
- clearance to land
- a creatine clearance of 25 milliliters per minute
She has a security clearance that allows her to see the classified information.
The pilot got clearance to land.
That flight has not received clearance for landing.
There was only 10 inches of clearance between the car and the side of the tunnel.
a bridge with a 100-foot clearance above the water
the clearance of forests for farming
slum clearance to make room for new housing
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.
: 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
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