Definify.com
Webster 1913 Edition
Clearance
Clear′ance
(klēr′ans)
, Noun.
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.
Webster 1828 Edition
Clearance
CLEARANCE
,Noun.