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clearance
Longman Dictionary of Contemporary English
clearance
noun
COLLOCATIONS FROM OTHER ENTRIES
clearance sale
security clearance
COLLOCATIONS FROM CORPUS
■ ADJECTIVE
creatinine
▪ No significant correlations were apparent between creatinine clearance and either duration of mesalazine treatment or cumulative mesalazine dose.
▪ A 24-hour urine specimen should be collected to determine creatinine clearance, and protein and uric acid excretion.
▪ At all times, renal function as assessed by serum creatinine and creatinine clearance remained normal.
▪ In massive dose, however, 4-ASA may cause haematuria and reduce creatinine clearance, particularly in patients with pre-existing renal disease.
long
▪ Sami Hyypia's long clearance was craftily controlled by Murphy.
■ NOUN
acid
▪ Oesophageal transit and acid clearance have also been shown to be slower in these patients.
▪ Figure 3 shows the relation between acid clearance time after acid perfusion and overnight exposure to acid.
▪ As expected, the acid clearance time was shorter in patients with normal peristalsis.
▪ Twenty three patients also had an acid clearance test before and after healing.
▪ All volunteers underwent manometry, 33 had oesophageal transit studies, and 23 had acid clearance test.
forest
▪ The area has escaped the ravages of war and forest clearance which have devastated most of the region.
▪ Accelerated erosion was more widespread than in the second episode, reflecting extensive forest clearance by the Purépecha.
ground
▪ Hartzell claim improved take-off and climb performance, reduced noise and vibration, and better ground clearance.
▪ I also need more ground clearance.
rate
▪ Statistics of process, such as arrests and clearance rates are accustomed indices of organizational success in a sanctioning system.
▪ San Jose also trailed the nation, with a 12. 7 percent clearance rate.
▪ Balri etal found that the metabolic clearance rate of G17 was lower in patients with duodenal ulcers than in controls.
▪ Only five were solved, for a 41. 7 percent clearance rate, less than two-thirds the national average.
▪ In one centre, the use of mechanical lithotripsy increased the endoscopic clearance rate of duct stones from 86% to 94%.
▪ Experts say that many clearance rates often are unreliable measures of police performance.
▪ Experts also say the clearance rates are most useful when comparing communities that are similar in size and income level.
security
▪ The challenge had come from Justice Department lawyers with top secret security clearances and from civilian Army drug counsellors.
▪ The secrecy touches all who work there; even the cafeteria staffers must have security clearances.
▪ Excuse me Major but I don't know you or your security clearance.
▪ Thompson still is hiring and getting security clearances for his investigative staff and finding space for them to work.
▪ A visitor without security clearance must be signed for by the sponsor and accompanied at all times.
▪ In preparation for his job at Commerce, Huang received an interim security clearance while he was still working at Lippo.
▪ He has dropped homosexuality as an impediment to security clearances.
▪ Another son, Ron, is a Lockheed employee with a security clearance.
slum
▪ But the end of slum clearance came more with a change in values: away from demolition, to conservation and rehabilitation.
▪ However, slum clearance and replacement was for the poor.
▪ It also extended them to cover land affected by new town designation orders, slum clearance orders and new street orders.
▪ Not in urban development, not in city slum clearance, not in social welfare.
▪ On a big estate - slum clearance - in the North.
▪ Elsewhere slum clearance activity was much more piecemeal and avoided spectacular set pieces.
▪ The Chamberlain Act also provided for subsidising slum clearance schemes.
▪ Finally, dissatisfaction with housing conditions produced schemes for slum clearance or improvement and substantial house-building programmes.
test
▪ Twenty three patients also had an acid clearance test before and after healing.
▪ All volunteers underwent manometry, 33 had oesophageal transit studies, and 23 had acid clearance test.
time
▪ Acid clearance time is a useful index of impaired oesophageal motor function.
▪ The median clearance time of newly acquired human papillomavirus was 6 months.
▪ Figure 3 shows the relation between acid clearance time after acid perfusion and overnight exposure to acid.
▪ As expected, the acid clearance time was shorter in patients with normal peristalsis.
■ VERB
get
▪ You will have to get clearance.
▪ Thompson still is hiring and getting security clearances for his investigative staff and finding space for them to work.
▪ She must have got clearance at Gravesend and sailed up on the ebb.
▪ Investigators recommended that Flynn be reprimanded for failing to get required advance clearance of his remarks from the State Department.
▪ It's an unscheduled stop, but he's already managed to get clearance.
▪ I got clearance from Fred to move.
give
▪ Some hotels give a luggage clearance pass to the head porter when the account has been settled.
▪ He has been given clearance to play.
▪ The tower, knowing the Citation was on a priority flight, gave him immediate taxiing clearance to the runway.
▪ Huang was given a top-secret clearance at Commerce after what Republicans have called a lax background investigation.
▪ It is seldom possible to give a general overall clearance of a product for all export markets.
▪ The old thick rad did not give enough clearance for a normal or any other type of fan.
▪ Customs and Immigration officers boarded the aircraft as soon as it landed to give Jackson clearance to leave.
▪ Goering means to come, and he wants us to give him clearance.
obtain
▪ Clearance applications require planning as it may take up to 30 days to obtain clearance.
▪ They say they simply believe that Aldrich violated the rules by not obtaining full clearance for his manuscript.
▪ Having obtained clearance, maintain your cleared altitude or flight level. 2.
receive
▪ In preparation for his job at Commerce, Huang received an interim security clearance while he was still working at Lippo.
EXAMPLES FROM OTHER ENTRIES
▪ Siegert helped the movie crew get clearance to film in the park.
▪ The clearance of brush around houses helped prevent the fire from spreading.
▪ The pilot requested clearance to land at Narita Airport.
▪ Two months after his heart attack, Mason received medical clearance to go back to work.
▪ We expect that we'll have clearance from the Justice Department for the buyout in the first quarter of the year.
▪ We need twelve feet of overhead clearance for the truck.
EXAMPLES FROM CORPUS
▪ A visitor without security clearance must be signed for by the sponsor and accompanied at all times.
▪ For those holding anything less than a full clearance, red badges are issued.
▪ Hartzell claim improved take-off and climb performance, reduced noise and vibration, and better ground clearance.
▪ Most of the loss is attributed to population growth and rural poverty, leading to land clearance for agriculture.
▪ Schwartz opened the conversation by saying that the Agency had decided to reinstate the employee and restore his clearance.
▪ The pact calls for the destruction of all stockpiles within four years of ratification and the clearance of minefields within 10 years.
▪ The third came from another defensive clearance which found Connolly in his own half inside the centre circle.
Related phrases:
The Collaborative International Dictionary
Clearance

Clearance \Clear"ance\ (kl[=e]r"ans), n.

  1. The act of clearing; as, to make a thorough clearance.

  2. A certificate that a ship or vessel has been cleared at the customhouse; permission to sail.

    Every ship was subject to seizure for want of stamped clearances.
    --Durke

  3. Clear or net profit.
    --Trollope.

  4. (Mach.) The distance by which one object clears another, as the distance between the piston and cylinder head at the end of a stroke in a steam engine, or the least distance between the point of a cogwheel tooth and the bottom of a space between teeth of a wheel with which it engages.

    Clearance space (Steam engine), the space inclosed in one end of the cylinder, between the valve or valves and the piston, at the beginning of a stroke; waste room. It includes the space caused by the piston's clearance and the space in ports, passageways, etc. Its volume is often expressed as a certain proportion of the volume swept by the piston in a single stroke.

Related phrases:
Douglas Harper's Etymology Dictionary
clearance

1560s, "action of clearing," from clear (v.) + -ance. Meaning "a clear space" is from 1788. Meaning "approval, permission" (especially to land or take off an aircraft) is from 1944, American English; national security sense recorded from 1948. Clearance sale attested by 1843.

Wiktionary
clearance

n. 1 The act of clearing or something (such as a space) cleared 2 The distance between two moving objects, especially between parts of a machine 3 The height or width of a tunnel, bridge or other passage, or the distance between a vehicle and the walls or roof of such passage; a gap, headroom. 4 A permission for a vehicle to proceed, or for a person to travel. 5 A permission to have access to sensitive or secret documents or other information 6 A sale of merchandise at a reduced price. 7 (context banking finance English) The settlement of transactions involving securities or means of payment such as checks by means of a clearing house. 8 (context medicine English) The removal of harmful substances from the blood; renal clearance. 9 (context sports billiards snooker pool English) The act of potting all the remaining balls on a table at one visit. 10 (context soccer English) The act of kicking a ball away from the goal one is defending.

Related phrases:
WordNet
clearance

  1. n. the distance by which one thing clears another; the space between them

  2. vertical space available to allow easy passage under something [syn: headroom, headway]

  3. permission to proceed; "the plane was given clearance to land"

Related phrases:
Wikipedia
Clearance (pharmacology)

In pharmacology, the clearance is a pharmacokinetic measurement of the volume of plasma from which a substance is completely removed per unit time; the usual units are mL/min. The quantity reflects the rate of drug elimination divided by plasma concentration.

The total body clearance will be equal to the renal clearance + hepatic clearance + lung clearance. Although for many drugs the clearance is simply considered as the renal excretion ability, that is, the rate at which waste substances are cleared from the blood by the kidney. In these cases clearance is almost synonymous with renal clearance or renal plasma clearance. Each substance has a specific clearance that depends on its filtration characteristics. Clearance is a function of glomerular filtration, secretion from the peritubular capillaries to the nephron, and re-absorption from the nephron back to the peritubular capillaries. Clearance is variable in zero-order kinetics because a constant amount of the drug is eliminated per unit time, but it is constant in first-order kinetics, because the amount of drug eliminated per unit time changes with the concentration of drug in the blood. The concept of clearance was described by Thomas Addis, a graduate of the University of Edinburgh Medical School.

It can refer to the amount of drug removed from the whole body per unit time, or in some cases the inter-compartmental clearances can be discussed referring to redistribution between body compartments such as plasma, muscle, fat.

Clearance

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
  • Engineering tolerance, a physical distance or space between two components
  • 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 (medicine), 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, forced displacements of people in Scotland in 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
Related phrases:

Usage examples of "clearance".

At first I believed they would surely tear their wings uponthe branches of the trees, but in looking more closely I saw that the great branches of the trees had been cut away to allow about twenty feet clearance, giving the alated an entrance and exit to the world.

He had to hire her on a freelance basis specifically to get the copyright clearances for the album since no one else at NEMS was capable of doing it.

Greater problem: low human-scale ceilings made it very scant clearance for tall atevi such as Banichi even to stand up, once they were standing, and made a room in which four or five atevi were drifting askew a very small-seeming room indeed.

One of them is--surprise--based in Milton Keynes, and as of right this minute you have clearance to stamp all over their turf and play the Gestapo officer with our top boffin labs.

Despite the fact that he had a Top Secret security clearance as a warrant officer in a high-level Army Reserve intelligence unit, Bucca was repeatedly frozen out by members of the NYPD-FBI Joint Terrorist Task Force, one of the key Bureau units hunting Yousef.

The Clearances emptied these high lands of some fifteen thousand people, most of them crofters, or tenant farmers, whose ancestors had lived here for generations.

My place in Auburn is small, but my Redmond doss would fit in it with enough room left over for a pool table and clearance to make your shots.

Najwyzsza Izba Kontroli it was twenty minutes by car but of course he could be absent or busy supervising the clearance of the underground forces from the city.

Once inside the relative warmth of the ops hut, the kone removed his helmet and remained on all fours, improving his head clearance.

He charged back with the naked bayonet glinting oilily and evilly in his hand, still screaming cursing, clear across the room where no man tried to stop him, but Maggio moving with his club out into the aisle for clearance and going to meet him, and death suddenly slid into the big room dartingly like a boxer on silent resined feet moving pantherishly in to punch.

Sam Levy had any kind of security clearance that would satisfy the Positive Vetting and Technical Services Division at Vauxhall Cross.

The Zoomies were not only qualified, they possessed clearance to fire anything up to a million-watt laser.

Kennedy helped us get advice from some Earthside agronomy station to set it up and helped get clearance for the first pair too.

FTAT had funds appropriated, but no people hired, no security clearances, and no space to work.

Hawker and Bourne had their backs to the stone to one side of the entranceway, too close together for a Molt to attempt to teleport between them but still giving their gun hands adequate clearance.