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definitions - speed:

speed (n.)

1.changing location rapidly

2.a central nervous system stimulant that increases energy and decreases appetite; used to treat narcolepsy and some forms of depression

3.a rate (usually rapid) at which something happens"the project advanced with gratifying speed"

4.the ratio of the focal length to the diameter of a (camera) lens system

5.distance travelled per unit time

6.a rate that is rapid

speed (v. intr.)

1.move faster"The car accelerated"

2.cause to move faster"He accelerated the car"

3.move very fast"The runner zipped past us at breakneck speed"

4.travel at an excessive or illegal velocity"I got a ticket for speeding"

5.move fast"He rushed down the hall to receive his guests" "The cars raced down the street"

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Merriam Webster

SpeedSpeed (?), n. [AS. sp�d success, swiftness, from sp�wan to succeed; akin to D. spoedd, OHG. spuot success, spuot to succees, Skr. sphā to increase, grow fat. √170b.]
1. Prosperity in an undertaking; favorable issue; success. “For common speed.” Chaucer.

O Lord God of my master Abraham, I pray thee, send me good speed this day. Gen. xxiv. 12.

2. The act or state of moving swiftly; swiftness; velocity; rapidly; rate of motion; dispatch; as, the speed a horse or a vessel.

Speed, to describe whose swiftness number fails. Milton.

☞ In kinematics, speedis sometimes used to denote the amount of velocity without regard to direction of motion, while velocity is not regarded as known unless both the direction and the amount are known.

3. One who, or that which, causes or promotes speed or success. [Obs.] “Hercules be thy speed!” Shak.

God speed, Good speed; prosperity. See Godspeed. -- Speed gauge, Speed indicator, and Speed recorder (Mach.), devices for indicating or recording the rate of a body's motion, as the number of revolutions of a shaft in a given time. -- Speed lathe (Mach.), a power lathe with a rapidly revolving spindle, for turning small objects, for polishing, etc.; a hand lathe. -- Speed pulley, a cone pulley with steps.

Syn. -- Haste; swiftness; celerity; quickness; dispatch; expedition; hurry; acceleration. See Haste.

SpeedSpeed (spēd), v. i. [imp. & p. p. Sped (spĕd), Speeded; p. pr. & vb. n. Speeding.] [AS. spēdan, fr. spēd, n.; akin to D. spoeden, G. sich sputen. See Speed, n.]
1. To go; to fare. [Obs.]

To warn him now he is too farre sped. Remedy of Love.

2. To experience in going; to have any condition, good or ill; to fare. Shak.

Ships heretofore in seas like fishes sped;
The mightiest still upon the smallest fed.
Waller.

3. To fare well; to have success; to prosper.

Save London, and send true lawyers their meed!
For whoso wants money with them shall not speed!
Lydgate.

I told ye then he should prevail, and speed
On his bad errand.
Milton.

4. To make haste; to move with celerity.

I have speeded hither with the very extremest inch of possibility. Shak.

5. To be expedient. [Obs.] Wyclif (2 Cor. xii. 1.)

SpeedSpeed, v. t.
1. To cause to be successful, or to prosper; hence, to aid; to favor. “Fortune speed us!” Shak.

With rising gales that speed their happy flight. Dryden.

2. To cause to make haste; to dispatch with celerity; to drive at full speed; hence, to hasten; to hurry.

He sped him thence home to his habitation. Fairfax.

3. To hasten to a conclusion; to expedite.

Judicial acts . . . are sped in open court at the instance of one or both of the parties. Ayliffe.

4. To hurry to destruction; to put an end to; to ruin; to undo.Sped with spavins.” Shak.

A dire dilemma! either way I 'm sped.
If foes, they write, if friends, they read, me dead.
Pope.

5. To wish success or god fortune to, in any undertaking, especially in setting out upon a journey.

Welcome the coming, speed the parting guest. Pope.

God speed you, them, etc., may God speed you; or, may you have good speed.

Syn. -- To dispatch; hasten; expedite; accelerate; hurry.

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definition (more)

definition of Wikipedia

synonyms - speed:

see also - speed:

phrases

-125 High Speed Mode • Adjustable-speed drive • American Speed Association • At the Speed of Life • Back in the Day (Speed Channel program) • Beijing-Shanghai High-Speed Railway • Bentley Speed 8 • Bentley Speed Six • Bridge (Speed album) • Built for Speed • Business @ the Speed of Thought • Carolina Speed • Chicks on Speed • Chris Speed • Cologne–Aachen high-speed railway • Constant Speed Drive • Constant speed propeller • DJ Reid Speed • Days of Speed • ESPN Speed World • Effective speed of transmission rate • Electronic speed control • European Speed Skating Championships • European Speed Skating Championships for Men • European Speed Skating Championships for Women • Frank Stack (speed skater) • GM-Ford 6-speed automatic transmission • Girl Talk/The Speed Star • God Speed You! Black Emperor • Goodwood Festival of Speed • High Speed Digital Spirit Processing • High Speed E.P. • High Speed Link • High Speed Telegraphy • High speed photography • High-Speed Circuit-Switched Data • High-Speed Serial Interface • High-Speed Uplink Packet Access • High-speed multimedia radio • High-speed rail • High-speed rail in the United States • High-speed rail service • Idle speed • Inline speed skating • International Big Rideau Lake Speed Skating Marathon • Internet-Speed Development • Jason Parker (speed skater) • John Farrell (speed skating) • John Roberts (Speed Channel host) • John Speed • Kang Yun-Mi (speed skater) • Lancelot Speed • Land speed record • Land speed record for rail vehicles • List of speed metal bands • List of speed skaters • List of speed skating records • Lucy Speed • Malcolm Speed • Mean piston speed • Mobile speed camera • Need for Speed II • Need for speed underground • New York high-speed rail • Pace (speed) • Pendine Museum of Speed • Prescott Speed Hill Climb • Propeller speed reduction unit • REO Speed Wagon • Racer X (Speed Racer) • Reproduction speed • Richmond Speed • Rise (Speed album) • Rita – Queen of Speed • Road Runner High Speed Online • Road speed limits in the Republic of Ireland • Rogers Hi-Speed Internet • Ronski Speed • SPECS (speed camera) • Safe Speed • Sell Control for Life's Speed • Shelsley Walsh Speed Hill Climb • Short track speed skating • Short track speed skating at the 1988 Winter Olympics • Short track speed skating at the 1992 Winter Olympics • Short track speed skating at the 1994 Winter Olympics • Short track speed skating at the 2002 Winter Olympics • Short track speed skating at the 2006 Winter Olympics • Short track speed skating at the Winter Olympics • Shutter speed • Shutter speed priority • Sikorsky’s high speed helicopters • Single Speed World Championship • Speed (1994 film) • Speed (band) • Speed (card game) • Speed (comics) • Speed (disambiguation) • Speed (novel) • Speed Badminton • Speed Ballads • Speed Bump • Speed Check • Speed Demon (Amalgam Comics) • Speed Demon (film) • Speed Dependent Damping Control • Speed Graphic • Speed Kings • Speed Limit 140 BPM+ • Speed Memorial Live “One More Dream” + Remix • Speed Metal Symphony • Speed Queen • Speed Queen (comics) • Speed Racer • Speed Read • Speed S. Fry • Speed School • Speed Skating World Cup • Speed Stick • Speed Trap • Speed Tribes • Speed Zone! • Speed auction tv • Speed bag • Speed bump • Speed bump (disambiguation) • Speed camera • Speed dating • Speed limit • Speed metal • Speed of Flight • Speed of Life • Speed of advance • Speed of service • Speed positioning • Speed prior • Speed reading • Speed scrabble • Speed skating • Speed skating at the 1968 Winter Olympics • Speed skating at the 1972 Winter Olympics • Speed skating at the 1976 Winter Olympics • Speed skating at the 1980 Winter Olympics • Speed skating at the 1984 Winter Olympics • Speed skating at the 1988 Winter Olympics • Speed skating at the 1992 Winter Olympics • Speed skating at the 1994 Winter Olympics • Speed skating at the 2002 Winter Olympics • Speed skating at the 2006 Winter Olympics • Speed skating at the 2006 Winter Olympics – Men's 10000 metres • Speed skating at the 2006 Winter Olympics – Men's 1500 metres • Speed skating at the 2006 Winter Olympics – Men's 500 metres • Speed skating at the 2006 Winter Olympics – Men's 5000 metres • Speed skating at the 2006 Winter Olympics – Women's 1000 metres • Speed skating at the 2006 Winter Olympics – Women's 1500 metres • Speed skating at the 2006 Winter Olympics – Women's 3000 metres • Speed skating at the 2006 Winter Olympics – Women's 500 metres • Speed skating at the 2006 Winter Olympics – Women's 5000 metres • Speed skating at the Winter Olympics • Speed skiing • Speed skiing at the 1992 Winter Olympics • Speed the Memorial Best 1335days Dear Friends 1 • Speed the Memorial Best 1335days Dear Friends 2 • Speed to fly • Speed trap • Speed, Kansas • Speed, North Carolina • Speed-loader • Starting Over (Speed album) • Stroke speed • Supersonic speed • TGV world speed record • TVR Cerbera Speed 12 • TVR Speed 12 • Ten Speed (Of God's Blood and Burial) • Ten Speed Press • Terry McDermott (speed skating) • The Sound of Speed • The Speed of Dark • The Speed of Sound (album) • The Wizard of Speed and Time • Three-speed bicycle • Train speed optimization • Tvr speed 12 • Twice the Speed of Life • Unsafe at Any Speed • Very High Speed ADSL • Very high speed digital subscriber line 2 • Wang Meng (speed skater) • Wheel speed sensor • Wind speed • World Allround Speed Skating Championships • World Allround Speed Skating Championships for Women • World Computer Speed Chess Championship • World Speed Poker Open • World Speed Skating Championships • World Sprint Speed Skating Championships • World Sprint Speed Skating Championships for Men • World Sprint Speed Skating Championships for Women

analogical dictionary



speed (n.)




speed (n.)




 

acceleration; quickening; speedup[ClasseHyper.]

caractère d'un phénomène (fr)[ClasseParExt.]

celerity; velocity; rate; speed; swiftness; fastness; rapidness[ClasseHyper.]

celerity; velocity; rate; speed; swiftness; fastness; rapidness[ClasseHyper.]

devenir plus lent (fr)[Classe]

(celerity; velocity; rate; speed; swiftness; fastness; rapidness)[termes liés]

factotum[Domaine]

Motion[Domaine]

conduite auto (fr)[DomaineCollocation]

opération de conduite d'un véhicule (fr)[DomaineCollocation]

quality[Domaine]

FunctionQuantity[Domaine]

metrology[Domaine]

SpeedFn[Domaine]

Increasing[Domaine]

accrue, augment, grow, increase, mount, mount up, put up, raise, rise, run, run up, strengthen - action, motion, move, movement - hurrying, speed, speeding - pace, rate - temporal property - pace, rate - go, go along, locomote, move, travel - decrease, diminish, fall, fall off, lessen[Hyper.]

intensification - intenseness, intensity, intensiveness - accelerate, quicken, speed, speedup, speed up - accelerate, pick up speed, quicken, speed, speed up - hurry, speed, travel rapidly, zip - speed - belt along, bucket along, cannonball along, flash, hasten, hie, hotfoot, pelt along, race, rush, rush along, speed, step on it, streak - rapid, speedy - fast - fast, fleet, quick, rapid, snappy, speedy, swift - quick, speedy - slow - fast - fast, flying, quick - haste, hurry, rush, rushing - celerity, fastness, rate, speed, swiftness, velocity - speed, velocity - lag, retardation, slowdown, time delay - deceleration, retardation, slowing[Dérivé]

increasing[Similaire]

deceleration - dawdle, linger, take one's time[Ant.]

factotum[Domaine]

Accelerating[Domaine]

speed (v. intr.)


 

rendre plus rapide (fr)[Classe]

aller vite (fr)[Classe]

se lancer vivement en avant (fr)[Classe]

courir vite (fr)[Classe]

change; alter; modify[ClasseHyper.]

acceleration; quickening; speedup[ClasseHyper.]

caractère d'un phénomène (fr)[ClasseParExt.]

pedal; treadle; foot pedal; foot lever[Classe]

celerity; velocity; rate; speed; swiftness; fastness; rapidness[ClasseHyper.]

celerity; velocity; rate; speed; swiftness; fastness; rapidness[ClasseHyper.]

(quicken; accelerate; speed; speed up; pick up speed), (chauffeur), (steering-wheel)[Thème]

(celerity; velocity; rate; speed; swiftness; fastness; rapidness)[termes liés]

véhicule (fr)[DomaineCollocation]

sexuality[Domaine]

Removing[Domaine]

causes[Domaine]

factotum[Domaine]

Motion[Domaine]

conduite auto (fr)[DomaineCollocation]

opération de conduite d'un véhicule (fr)[DomaineCollocation]

dispositif d'alimentation d'un moteur (fr)[DomainDescrip.]

poste de conduite d'une auto (fr)[DomainDescrip.]

building_industry[Domaine]

Device[Domaine]

quality[Domaine]

FunctionQuantity[Domaine]

metrology[Domaine]

SpeedFn[Domaine]

Increasing[Domaine]

action, motion, move, movement - hurrying, speed, speeding - valve - foot lever, foot pedal, pedal, treadle - pace, rate - temporal property - pace, rate - alter, change, modify[Hyper.]

change - adjustment, alteration, change, changing, edit, modification, variation - change - alteration, change, modification, transformation - changer, modifier - change - change - alterable - editable, modifiable - accelerate, quicken, speed, speedup, speed up - accelerate, pick up speed, quicken, speed, speed up - hurry, speed, travel rapidly, zip - speed - belt along, bucket along, cannonball along, flash, hasten, hie, hotfoot, pelt along, race, rush, rush along, speed, step on it, streak - rapid, speedy - choke, throttle - fast - fast, fleet, quick, rapid, snappy, speedy, swift - quick, speedy - slow - fast - fast, flying, quick - lag, retardation, slowdown, time delay[Dérivé]

fuel system - aeroplane, airbus, aircraft, airplane, plane, runabout - auto, automobile, banger, car, crock, jalopy, machine, motorcar, motor car, rattletrap, runabout[Desc]

change[Cause]

increasing[Similaire]

deceleration - deceleration, retardation, slowing[Ant.]

speed (v. intr.)





Wikipedia - see also

Wikipedia

Speed

                   

In kinematics, the speed of an object is the magnitude of its velocity (the rate of change of its position); it is thus a scalar quantity. The average speed of an object in an interval of time is the distance traveled by the object divided by the duration of the interval;[1] the instantaneous speed is the limit of the average speed as the duration of the time interval approaches zero .

Like velocity, speed has the dimensions of a length divided by a time; the SI unit of speed is the meter per second, but the most usual unit of speed in everyday usage is the kilometer per hour or, in the USA and the UK, miles per hour. For air and marine travel the knot is commonly used.

The fastest possible speed at which energy or information can travel, according to special relativity, is the speed of light in a vacuum c = 299,792,458 meters per second, approximately 1079 million kilometers per hour (671,000,000 mph). Matter cannot quite reach the speed of light, as this would require an infinite amount of energy. In relativity physics, the concept of rapidity replaces the classical idea of speed. In day-to-day athletics, it is proper to say that a teenager can achieve at least 20 km/h (or 12.43 mph) of speed while a best runner can achieve 30 km/h (or 18.64 mph) which is similar to running 100 metres in about 12 seconds. The average speed for a teenager is 24 km/h, which can be a result of running 100 m in 15 seconds.

Contents

  Definition

The speed v is defined as the magnitude of the velocity v, that is, the derivative of the position r with respect to time:

v = \left|\mathbf v\right| = \left|\dot {\mathbf r}\right| = \left|\frac{d\mathbf r}{dt}\right|.

If s is the length of the path traveled until time t, the speed equals the time derivative of s:

v = \frac{ds}{dt}.

In the special case where the velocity is constant (that is, constant speed in a straight line), this can be simplified to v=s/t. The average speed over a finite time interval is the total distance traveled divided by the time duration.

Expressed in graphical language, the slope of a tangent line of a distance-time graph is the instantaneous speed, and the slope of a chord line of distance-time graph is the average speed over the time interval between the ends of the chord.

  Units

Units of speed include:

Conversions between common units of speed
m/s km/h mph knot ft/s
1 m/s = 1 3.6 2.236936 1.943844 3.280840
1 km/h = 0.277778 1 0.621371 0.539957 0.911344
1 mph = 0.44704 1.609344 1 0.868976 1.466667
1 knot = 0.514444 1.852 1.150779 1 1.687810
1 ft/s = 0.3048 1.09728 0.681818 0.592484 1

(Values in bold face are exact.)

  Examples of different speeds

Speed m/s ft/s km/h mph Notes
Approximate rate of continental drift 0.00000001 0.00000003 0.00000004 0.00000002 4 cm/year. Varies depending on location
Speed of a common snail 0.001 0.003 0.004 0.002 1 millimeter per second.
A brisk walk 1.7 5.5 6.1 3.8 (5.5 feet per second)
A typical road cyclist 4.4 14.4 16 10 Varies wildly by person, terrain, bicycle, effort, weather.
Sprint runners 10 32.8 36 22 Average speed over 100 meters.
Approximate average speed of road cyclists 12.5 41.0 45 28 On flat terrain. Will vary.
Typical suburban speed limit in most of the world 13.8 45.3 50 30
Taipei 101 observatory elevator 16.7 54.8 60.6 37.6 1010 m/min.
Typical rural speed limit 24.6 80.66 88.5 56
British National Speed Limit (single carriageway) 26.8 88 96.56 60
Category 1 hurricane 33 108 119 74 Minimum sustained speed over 1 minute
Speed limit on a French autoroute 36.1 118 130 81
Highest recorded human-powered speed 37.02 121.5 133.2 82.8 Sam Whittingham in a recumbent bicycle[2]
Muzzle velocity of a paintball marker 90 295 320 200
Cruising speed of a Boeing 747-8 passenger jet 255 836 917 570 Mach 0.85 at 35,000 ft altitude
The official land speed record 341.1 1119.1 1227.98 763
The speed of sound in dry air at sea-level pressure and 20 °C 343 1125 1235 768 Mach 1 by definition. 20 °C = 293 kelvin.
Muzzle velocity of an AK47 assault rifle bullet 710 2,330 2,600 1600
Official flight airspeed record 980 3,215 3,530 2,194
Space shuttle on re-entry 7,800 25,600 28,000 17,500
Escape velocity on Earth 11,200 36,700 40,000 25,000 11.2 km∙s−1
Average orbital speed of planet Earth 29,783 97,713 107,218 66,623
Speed of light in vacuum (symbol c) 299,792,458 983,571,056 1,079,252,848 670,616,629 Exactly 299,792,458 m∙s−1, by definition of the meter.

Vehicles often have a speedometer to measure the speed they are moving.

  See also

  References

Barney stinson

   
               

 

All translations of speed:


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