a-d meaning

• [Finance]
  Advance-Decline, or measurement of the number of issues trading above their previous closing prices less the number trading below their previous closing prices over a particular period. As a technical measure of market breadth, the steepness of the AD line indicates whether a strong bull or bear market is under way.

• 'd:     /d/ short form of ...
• a.d.:    [Architecture]Abbr ...
• a/d:    [Defence]analog-to ...

Examples

1. the above sequence of events is illustrated in fig. 2. 2 a-d.