clearance : Dictionary / Wörterbuch (BEOLINGUS, TU Chemnitz)

English Dictionary: clearance	by the DICT Development Group
2 results for clearance
From WordNet (r) 3.0 (2006) [wn]:
clearance n the distance by which one thing clears another; the space between them vertical space available to allow easy passage under something Synonym(s): headroom, headway, clearance permission to proceed; "the plane was given clearance to land"
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Clearance \Clear"ance\ (-[ait]ns), 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.