reverse search

Comprehensive
Dictionary Suite
Help
Help
Help
 
compass an instrument for determining direction, esp. one with a horizontal magnetic needle that rotates freely until it points to the magnetic north. [1/9 definitions]
declination the horizontal angle between magnetic north and true north at any given point on the earth's surface. [1/5 definitions]
heading in aeronautics, the direction an aircraft is pointing, expressed as the angle between the aircraft's axis and magnetic north. [1/3 definitions]