Definition of Acceliration
Ac*cel`er*a"tion (&?;), n. [L.
acceleratio: cf. F. accélération.] The act
of accelerating, or the state of being accelerated; increase of motion or
action; as, a falling body moves toward the earth with an
acceleration of velocity; -- opposed to
retardation.
A period of social improvement, or of intellectual
advancement, contains within itself a principle of acceleration.
I. Taylor.
(Astr. & Physics.) Acceleration of the moon,
the increase of the moon's mean motion in its orbit, in consequence of
which its period of revolution is now shorter than in ancient times. -
- Acceleration and retardation of the
tides. See Priming of the tides, under
Priming. -- Diurnal acceleration of the fixed
stars, the amount by which their apparent diurnal motion
exceeds that of the sun, in consequence of which they daily come to the
meridian of any place about three minutes fifty-six seconds of solar time
earlier than on the day preceding. -- Acceleration of the
planets, the increasing velocity of their motion, in
proceeding from the apogee to the perigee of their orbits.
- Webster's Unabridged Dictionary (1913)
- (uncountable) The act of accelerating, or the state of being accelerated; increase of motion or action; as opposed to retardation or deceleration.
a falling body moves toward the earth with an acceleration of velocity
- (countable) The amount by which a speed or velocity increases (and so a scalar quantity or a vector quantity).
The boosters produce an acceleration of 20 metres per second per second.
Quotations
:A period of social improvement, or of intellectual advancement, contains within itself a principle of acceleration — I. Taylor
- (physics) The change of velocity with respect to time (can include deceleration).
Interlingua
- acceleration
Swedish
- acceleration
- The Nuttall Encyclopedia
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