English

Etymology
Latin acceleratio; compare French accélération
accelerate + -tion

Pronunciation
�ks�l�r�'sh�n, /�k.s�l.��reɪ.��n/, /<tt>@ksEl@"reIS@n</tt>/
:Rhymes: Rhymes:English:-eɪ��n|-eɪ��n

Noun
en-noun|s|-

1. (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

1. <!--DefB-->(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 &mdash; I. Taylor

1. <!--DefC-->physics The change of velocity with respect to time (can include deceleration or changing direction).

Usage notes
Acceleration in SI units is measured in metres per second per second (m/s²), or in imperial units in feet per second per second (ft/s²).

Antonyms
<!--DefA--><!--DefB--><!--DefC-->(act, state, amount): deceleration, retardation

<!--these need to go on separate pages

Derived terms
all from astronomy and 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
-->

Translations

trans-top|act, state
Croatian: t-|hr|akceleracija|f, t-|hr|ubrzanje|n
Dutch: t-|nl|versnelling|f, t-|nl|acceleratie|f
Finnish: t-|fi|kiihdytys
French: t+|fr|accélération|f
German: t+|de|Beschleunigung|f
Hebrew: ��צ� (he'atza) f
Interlingua: acceleration
Italian: t+|it|accelerazione|f
Japanese: �� (���, kasoku)
trans-mid
Norwegian: t-|no|akselerasjon|m
Polish: t-|pl|przyspieszenie|n, t-|pl|akceleracja|f
Portuguese: t-|pt|aceleração|f
Romanian: t-|ro|acceleraţie|f
Spanish: t-|es|aceleración
Russian: t-|ru|��ко�ение|f|scCyrl, t-|ru|�азгон|m|scCyrl
Swedish: t+|sv|acceleration|c
trans-bottom

trans-top|amount
Croatian: t-|hr|akceleracija|f, t-|hr|ubrzanje|n
Dutch: t-|nl|versnelling|f, t-|nl|acceleratie|f
Finnish: t+|fi|kiihtyvyys
French: t+|fr|accélération|f
German: t+|de|Beschleunigung|f
trans-mid
Hebrew: ת��צ� (teutza) f
Italian: t+|it|accelerazione|f
Japanese: ��度 (����, kasokudo)
Polish: t-|pl|przyspieszenie|n
Swedish: t+|sv|acceleration|c
trans-bottom

trans-top|(physics)
Croatian: t-|hr|akceleracija|f, t-|hr|ubrzanje|n
Dutch: t-|nl|versnelling|f, t-|nl|acceleratie|f
Finnish: t+|fi|kiihtyvyys
French: t+|fr|accélération|f
German: t+|de|Beschleunigung|f
Hebrew: t-|he|ת��צ�|f|sc=Hebr
trans-mid
Italian: t+|it|accelerazione|f
Polish: t-|pl|przyspieszenie|n
Russian: t-|ru|��ко�ение|f|sc=Cyrl
Slovene: t+|sl|pospešek|m
Swedish: t+|sv|acceleration|c
Urdu: اسراع (israa) m
trans-bottom

Translations to be checked
checktrans
ttbc|Indonesian: cepat|percepatan

Category:Science

See also
displacement
velocity
jerk

Interlingua

Noun
acceleration

1. <!--DefA-->acceleration

Swedish

Noun
acceleration

1. <!--DefA-->acceleration

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• 2007-12-19 15:00 - Tbot - added t for sl

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