Definition of speed
(Entry 1 of 2)
1a
: rate of motion: such as
(1)
: velocity sense 1
(2)
: the magnitude of a velocity irrespective of direction
b
: the act or state of moving swiftly : swiftness
c
: impetus
2
: swiftness or rate of performance or action : velocity sense 3a
3a
: the sensitivity of a photographic film, plate, or paper expressed numerically
b
: the time during which a camera shutter is open
c
: the light-gathering power of a lens or optical system
4
: a transmission gear in automotive vehicles or bicycles
—usually used in combination a ten-speed bicycle
5
: someone or something that appeals to one's taste
just my speed
speed
verbDefinition of speed (Entry 2 of 2)
1a
: to make haste
sped to her bedside
b
: to go or drive at excessive or illegal speed
2
: to move, work, or take place faster : accelerate
the heart speeds up
1a
: to cause to move quickly : hasten
b
: to increase the speed of : accelerate
c
: to wish Godspeed to
2a
: to further the success of
3
: to send out
speed an arrow
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Merriam-Webster unabridged
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Time Traveler for speed
The first known use of speed was before the 12th century
See more words from the same century