The act of clearing or something (such as a space) cleared. / The distance between two moving objects, especially between parts of a machine

plural of clearance

A hole through an object which is large enough to enable threads of a screw or bolt to pass through but not the head of the screw or bolt.

plural of ground clearance

(automotive) The shortest distance between a level surface, and any part (other than tires or equivalent) of the underside of a vehicle standing on that surface.

(medicine) A measure of the ability of the kidneys to remove a specific substance from the bloodstream.

plural of total clearance

(snooker) The potting of all the object balls on the table. / Used other than figuratively or idiomatically: see total, clearance.

plural of clearance hole

In a steam engine, the space enclosed in one end of the cylinder, between the valve(s) 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.