|  | Eng ID | Term | Definition | 
|---|---|---|---|
|  | 341 | azimuth: reverse | See AZIMUTH:  BACK. | 
|  | 342 | azimuth: true | AZIMUTH relative to TRUE NORTH. | 
|  | 343 | azimuthal equidistant projection | See PROJECTION. | 
|  | 344 | azimuthal orthomorphic projection | See PROJECTION: STEREOGRAPHIC. | 
|  | 345 | azimuthal projection | See PROJECTION. | 
|  | 346 | azimuth angle | AZIMUTH measured from 0° at the north or south reference direction clockwise or counter-clockwise through 90° or 180°. It is labelled wit... more | 
|  | 347 | azimuth circle | See BEARING CIRCLE. | 
|  | 348 | azimuth diagram | A DIAGRAM for obtaining graphically rather than by computation the AZIMUTHS of observed CELESTIAL BODIES. | 
|  | 349 | azimuth mark | A MARK set at a significant distance from a TRIANGULATION or TRAVERSE STATION to mark the end of a line for which the AZIMUTH has been deter... more | 
|  | 350 | back azimuth | See AZIMUTH. | 
|  | 351 | backbeach | Also written as two words. See BACKSHORE. | 
|  | 352 | backing wind | Counter-clockwise change of wind direction, in either hemisphere. | 
|  | 353 | backrush | The seaward return of water following UPRUSH of WAVES on a BEACH. | 
|  | 354 | backrush current | See CURRENT: BACKRUSH. | 
|  | 355 | backshore | That part of a BEACH which is usually dry, being reached only by the highest TIDES. Also called backbeach. See also FORESHORE. | 
|  | 356 | backsight | In NAUTICAL ASTRONOMY, an OBSERVATION of a CELESTIAL BODY made by facing 180° from the AZIMUTH of the body. In LEVELLING, a reading on a LE... more | 
|  | 357 | backwash | Water or WAVES thrown back by an obstruction such as a ship, BREAKWATER, CLIFF, etc. | 
|  | 358 | backwater | Water turned back by an obstruction, opposing CURRENT, etc. Water held back from the main FLOW. | 
|  | 359 | ballistic camera | See CAMERA. | 
|  | 360 | band of colour | See STRIPES (OF COLOUR) |