Meaning

• The state of moving quickly or the capacity for rapid motion; rapidity.

  "How does Usain Bolt run at that speed?"

• The rate of motion or action, specifically / the magnitude of the velocity; the rate distance is traversed in a given time.

  "Speed limits provide information to the drivers about the safe speed to travel in average conditions."

• The sensitivity to light of film, plates or sensor.

• The duration of exposure, the time during which a camera shutter is open (shutter speed).

• The largest size of the lens opening at which a lens can be used.

• The ratio of the focal length to the diameter of a photographic objective.

• Amphetamine or any amphetamine-based drug (especially methamphetamine) used as a stimulant, especially illegally.

• Luck, success, prosperity.

• Personal preference.

  "We could go to the shore next week, or somewhere else if that's not your speed."

• A third-order measure of derivative price sensitivity, expressed as the rate of change of gamma with respect to changes in the underlying asset price.