speed

Definitions

• The state of moving quickly or the capacity for rapid motion; rapidity.
• The rate of motion or action, specifically (mathematics)/(physics) the magnitude of the velocity; the rate distance is traversed in a given time.
• (photography) The sensitivity to light of film, plates or sensor.
• (photography) The duration of exposure, the time during which a camera shutter is open (shutter speed).
• (photography) The largest size of the lens opening at which a lens can be used.
• (photography) The ratio of the focal length to the diameter of a photographic objective.
• (slang) Amphetamine or any amphetamine-based drug (especially methamphetamine) used as a stimulant, especially illegally.
• (archaic) Luck, success, prosperity.
• (slang) Personal preference.
• (finance) 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.