Meaning of CLEARANCE in English

CLEARANCE

transcription, транскрипция: [ ˈklir-ən(t)s ]

noun

Date: 1540

1. : an act or process of clearing: as

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 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

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.