clearance

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

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Examples of clearance in a Sentence

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
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Recent Examples on the Web

The White House revoked his security clearance earlier this year. Vivian Salama, WSJ, "Trump Condemns Violence After Pipe Bombs Sent to Democrats, CNN," 24 Oct. 2018 Goaded on by Republican Sen. Rand Paul of Kentucky, who has been fiercely critical of Brennan’s policy views and actions for almost a decade, Trump signed an order weeks ago to strip the career intelligence official of his security clearance. Zeke Miller, The Seattle Times, "Trump looks to Brennan for a foil in Russia probe spat," 21 Aug. 2018 Caballero mangled a clearance and kicked the ball toward Croatia defender Ante Rebic, who one-timed it into the net in the 53rd minute. Stephen Wade, Houston Chronicle, "Lionel Messi, Argentina beaten at World Cup, Croatia advances," 21 June 2018 Kushner was one of a number of White House aides that had been working in the administration without a permanent security clearance for the better part of a year. Elizabeth Zwirz, Fox News, "Jared Kushner has full security clearance restored," 23 May 2018 But, according to multiple Administration officials, he was never granted a high-level security clearance. Kathryn Schulz, The New Yorker, "McMaster and Commander," 23 Apr. 2018 But what’s particularly notable in the movie is that the clearance process is handled automatically, using biometrics, or specifically, voiceprint identification. Stephen Wolfram, WIRED, "2001: A Space Odyssey Predicted The Future—50 Years Ago," 3 Apr. 2018 If that weren’t bad enough, the Rob Porter brouhaha revealed that more than 130 political appointees hadn’t secured permanent clearances as of November 2017, including members of Trump’s family and close advisers. Ana Veciana-suarez, miamiherald, "Dysfunction is the name of the game in Washington, D.C. | Miami Herald," 16 Feb. 2018 In Kushner's case, a final decision about a permanent security clearance is also still pending. Author: Michael D. Shear, Matthew Rosenberg, Anchorage Daily News, "Security clearances at White House come under renewed scrutiny," 13 Feb. 2018

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.

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First Known Use of clearance

1540, in the meaning defined at sense 1

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Statistics for clearance

Last Updated

14 Jan 2019

Look-up Popularity

Time Traveler for clearance

The first known use of clearance was in 1540

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More Definitions for clearance

clearance

noun

English Language Learners Definition of clearance

: 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

noun
clear·​ance | \ ˈklir-əns \

Kids Definition of clearance

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.

clearance

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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Comments on clearance

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