clearance
noun
clear·ance
ˈklir-ən(t)s
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
Cite this Entry
“Clearance.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/clearance. Accessed 5 Aug. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
