speed

English

/spiːd/

noun
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.

Etymology

Inherited from Middle English spede (prosperity, success, good luck, quickness) inherited from Old English spēd (success, luck, prosperity) inherited from *spōdi (success, prosperity), *spōan derived from Proto-Germanic *spōaną (prosper, succeed, be happy) inherited from Proto-Indo-European *speh₁- (prosper, turn out well, succeed, pull, stretch), *speh₁- (prosper, turn out well, succeed, pull, stretch).

Origin

Proto-Indo-European

*speh₁-

Gloss

prosper, turn out well, succeed, pull, stretch

Concept
Semantic Field

Cognition

Ontological Category

Action/Process

Emoji

Timeline

Distribution of cognates by language

Geogrpahic distribution of cognates

Cognates and derived terms