- 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.
Origin of speed
Synonyms for speed
Antonyms for speed
Related Words for spedfly, advance, rush, promote, run, help, facilitate, ride, zoom, further, hurry, hasten, boost, expedite, quicken, urge, hightail, assist, bomb, gallop
Examples from the Web for sped
Contemporary Examples of sped
Today the train station that once sped exports to all corners of the country runs one train a week.
Mothers pushed their children's heads down and they sped through town, leaving a trail of machine-gun shells in their wake.
With the news of an American being diagnosed with Ebola on U.S. soil, Garry hopes the process may be sped along.This New Ebola Test Is As Easy As a Pregnancy Test, So Why Aren’t We Using It?
October 3, 2014
The smugglers then sped off, leaving as many as a hundred people floating in the water.Hundreds of Migrants are Reported Drowned by Traffickers Near Malta
Barbie Latza Nadeau
September 15, 2014
For some, it sped up a process of awakening that may have taken years.Psychedelics Are Ready for a Comeback
September 8, 2014
Historical Examples of sped
Ambrose sped away, knowing that Perronel would be quite satisfied.The Armourer's Prentices
Charlotte M. Yonge
The arrow that he sped from his cross-bow struck in the yellow flanks.The Trail Book
But Mary, regardless of maternal cacklings, sped after the doctor as he turned his horse.Tiverton Tales
The long hours, of watching and waiting, sped on, until it was nearly dark.Welsh Fairy Tales
William Elliott Griffis
Diana had sped an arrow from her bow that is like the crescent moon.Old Greek Folk Stories Told Anew
Josephine Preston Peabody
- 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)