- Also called film speed.the sensitivity of a film or paper to light, measured by an ASA or DIN index, which assigns low numbers to slow film and higher numbers to faster film.
- Also called shutter speed.the length of time a shutter is opened to expose film.
- the largest opening at which a lens can be used.
verb (used with object), sped or speed·ed, speed·ing.
verb (used without object), sped or speed·ed, speed·ing.
- at the greatest speed possible: We drove down the highway at full speed.
- to the maximum of one's capabilities; with great rapidity: He worked at full speed.
- operating at full or optimum speed.
- functioning or producing at an expected, acceptable, or competitive level; up to par: a new firm not yet up to speed.
Origin of speed
Synonyms for speed
Antonyms for speed
Examples from the Web for speed
Contemporary Examples of speed
Term limits could be a prescription to speed change along.The Unbearable Whiteness of Congress
January 8, 2015
The jet engine instantly brought two advances over propellers: it doubled the speed and it was far more reliable.Flight 8501 Poses Question: Are Modern Jets Too Automated to Fly?
January 4, 2015
One report has the AirAsia Airbus flying at a speed very close to what would trigger a low speed stall.Did Bad Weather Bring Down AirAsia 8501?
December 29, 2014
Said it was like speed dating because he was late after hitting every wrong gate on the lot.Exclusive: Sony Emails Slam Leonardo DiCaprio, Willow and Jaden Smith, Gush Over Ryan Gosling
December 13, 2014
In a flash he deflects the shot, with the speed of instinct, right past the goalkeeper.Is Soccer Great Lionel Messi Corrupt?
December 8, 2014
Historical Examples of speed
All started at speed to meet her, but presently Mrs. Raymount sank on the grass.Weighed and Wanting
I pray you to speed a bolt against yonder shield with all your force.The White Company
Arthur Conan Doyle
Here was speed, and with such stride—strong, and straight, and true!Thoroughbreds
W. A. Fraser
Ye're planning to speed that thing before ye've got it off the jacks.
He ran with all the speed he had ever attained at a track meet.
- a gear ratio in a motor vehicle, bicycle, etc
- (in combination)a three-speed gear
- operating at an acceptable or competitive level
- in possession of all the relevant or necessary information
verb speeds, speeding, sped or speeded
- (intr)to prosper or succeed
- (tr)to wish success to
Word Origin for speed
Old English sped "success, prosperity, advancement," from Proto-Germanic *spodiz (cf. Old Saxon spod "success," Dutch spoed "haste, speed," Old High German spuot "success," Old Saxon spodian "to cause to succeed," Middle Dutch spoeden, Old High German spuoten "to haste"), from PIE *spo-ti- "speed," from *spe- "to thrive, prosper" (cf. Sanskrit sphayate "increases," Latin sperare "to hope," Old Church Slavonic spechu "endeavor," Lithuanian speju "to have leisure").
Meaning "quickness of motion or progress" emerged in late Old English (usually adverbially, in dative plural, e.g. spedum feran), emerging fully in early Middle English. Meaning "gear of a machine" is attested from 1866. Meaning "methamphetamine, or a related drug," first attested 1967, from its effect on users. Speed bump is 1975; figurative sense is 1990s. Full speed is recorded from late 14c. Speed reading first attested 1965. Speedball "mix of cocaine and morphine or heroin" is recorded from 1909.
Old English spedan "to succeed, prosper, advance" (see speed (n.)). Meaning "to go fast" is attested from c.1300. Meaning "to send forth with quickness" is first recorded 1560s; that of "to increase the work rate of" (usually with up) is from 1856. Related: Speeded; speeding.
In addition to the idiom beginning with speed
- speed up
- full speed ahead
- up to par (speed)