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speed

(spēd),
The magnitude of velocity without regard to direction. Compare: velocity.

speed

(spēd)
n.
Slang A stimulant drug, especially amphetamine or methamphetamine.
v. sped (spĕd) or speeded, speeding, speeds
v.intr.
Slang To be under the influence of a stimulant drug.

speed

Etymology: AS, spedan, to hasten
1 the rate of change of position with time. Compare velocity.
2 See amphetamines.
3 a reciprocal of the amount of radiation used to produce an image with various components of an x-ray imaging system, such as screens, film, and image intensifiers. There is often a tradeoff between radiation dose to the patient and the overall image quality. Thus a system using little radiation is "fast," whereas one requiring more radiation is "slow."
4 the amount of exposure of film to light or x-rays needed to produce a desired image. X-ray film speed usually is indicated as the reciprocal of the exposure in roentgens necessary to produce a density of 1 above the base and fog levels. See also fogged film fault.
Drug slang A regional street synonym for amphetamine, which may also refer to methamphetamine and crack cocaine
Vox populi Rapidity of movement

SPEED

Cardiology A clinical trial–Strategies for Patency Enhancement in the Emergency Department

speed

Drug slang A street synonym for amphetamine, which may also refer to methamphetamine and crack

speed

(spēd)
The magnitude of velocity without regard to direction.
Compare: velocity

speed

the change of distance with respect to time. A scalar quantity (i.e. having no directional component). linear speed is usually measured in metres per second (m.s-1), kilometres per hour (km.h-1) or miles per hour (mph), and angular speed in degrees per second (°.s-1) or radians per second (rad.s-1) See also velocity.

speed,

n the relative rapidity of action; rate of motion.
speed, film,
speed, high,
n a relatively great rapidity of motion. In cavity preparations, rotary instruments are classified according to the number of revolutions per minute (rpm) made by the cutting tool. Designation of each speed range presently varies. In general, conventional speed is 10,000 to 60,000 rpm, high speed is 60,000 to 100,000 rpm, and ultrahigh speed is more than 100,000 rpm. May also be used to describe an evacuation system.
speed of light,
n a speed of 186,300 miles/sec.
speed of radiation,
References in classic literature ?
Some of the sails were again hoisted, and the speed of the boat was very good.
The boy laughed too and said something which I could not catch for the whistling of the wind of our awful speed.
To have touched the side at the speed we were making would doubtless have resulted in instant death for us all.
We were not long in the shaft, and possibly the very fact of our enormous speed saved us, for evidently we started in the right direction and so quickly were we out again that we had no time to alter our course.
Our bow was pointed straight toward the U-boat now as I heard word passed to the engine for full speed ahead.
I heard someone shriek an order into the engine-room; the boat shuddered and trembled to the sudden reversing of the engines, and our speed quickly lessened.
I have little doubt that you can overshoot me, and yet I have seen bowmen who could send a cloth-yard arrow further than you could speed a quarrel.
I pray you to speed a bolt against yonder shield with all your force.
A carrier pigeon on a passage can achieve a high rate of speed, and Winn reefed again.
Just so," replied Nicholl; "but in what proportion do you estimate the diminution of speed by friction?
If, then, we had an initiatory speed of 12,000 yards, on leaving the atmosphere this speed would be reduced to 9,165 yards.
She advanced with great speed, and seemed to describe an orbit round the earth, which would intersect the passage of the projectile.