deceleration

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UK/diːsɛləˈɹeɪʃən/US/dɪˌsɛləˈɹeɪʃən/

noun

The act or process of decelerating.

“The rocket is now in deceleration.”

Opposite
Less commonScrabble 15

Meanings

noundeceleration (countable and uncountable, plural decelerations)

plural decelerations

  1. uncountableThe act or process of decelerating.

    The rocket is now in deceleration.

    1 more example

    Comparing both Regions' 1959 services against those of 1939 an appreciable deceleration is evident. This was due to increased loadings, even though more trains were being run, while on the W.R. in particular the increased volume of freight traffic over the line shared the blame.

    1960 February, R. C. Riley, “The London-Birmingham services - Past, Present and Future”, in Trains Illustrated, page 98
  2. countableThe amount by which a speed or velocity decreases (and so a scalar quantity or a vector quantity), an acceleration having a negative numerical value.

    The brakes produce a deceleration of 10 metres per second.

Synonyms & antonyms

antonym(s) of “act or process of decelerating”

Opposite

nouna decrease in rate of change

Opposite

noun(physics) a rate of decrease in velocity

Opposite
Broader

nounthe act of decelerating; decreasing the speed

Opposite

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

Translations

Arabic تَباطُؤ
  • تَباطُؤ (tabāṭuʔ)the act or process of decelerating
Catalan desacceleració, desceleració
  • desacceleracióthe act or process of decelerating
  • desceleracióthe act or process of decelerating
Chinese Mandarin 減速 /减速
  • 減速 /减速 (jiǎnsù)the act or process of decelerating
Czech zpomalení
  • zpomaleníthe act or process of decelerating
Dutch vertraging
  • vertragingthe act or process of decelerating
Finnish hidastaminen, hidastus
  • hidastaminenthe act or process of decelerating
  • hidastusthe act or process of decelerating
  • hidastuvuusamount by which a speed or velocity decreases
French décélération
  • décélérationthe act or process of decelerating
German Verlangsamung
  • Verlangsamungthe act or process of decelerating
Greek επιβράδυνση, επιβράδυνση
  • επιβράδυνση (epivrádynsi)the act or process of decelerating
  • επιβράδυνση (epivrádynsi)amount by which a speed or velocity decreases
Hungarian lassulás
  • lassulásthe act or process of decelerating
Indonesian perlambatan, deselerasi
  • perlambatanthe act or process of decelerating
  • deselerasiamount by which a speed or velocity decreases
  • perlambatanamount by which a speed or velocity decreases
Italian decelerazione
  • decelerazionethe act or process of decelerating
Japanese 減速
  • 減速 (gensoku)the act or process of decelerating
Malay nyahpecutan
  • nyahpecutanamount by which a speed or velocity decreases
Māori whakapōturitanga, whakapōturitanga
  • whakapōturitangathe act or process of decelerating
  • whakapōturitangaamount by which a speed or velocity decreases
Persian واشتاب
  • واشتاب (vâšetâb)the act or process of decelerating
Polish zwalnianie
  • zwalnianiethe act or process of decelerating
Portuguese desaceleração, desaceleração
  • desaceleraçãothe act or process of decelerating
  • desaceleraçãoamount by which a speed or velocity decreases
Russian торможе́ние, замедле́ние
  • торможе́ние (tormožénije)the act or process of decelerating
  • замедле́ние (zamedlénije)the act or process of decelerating
  • децелера́ция (decelerácija)the act or process of decelerating
  • децелера́ция (decelerácija)amount by which a speed or velocity decreases
Spanish desaceleración
  • desaceleraciónthe act or process of decelerating
Tagalog hidarasig, hidarasig
  • hidarasigthe act or process of decelerating
  • hidarasigamount by which a speed or velocity decreases
Ukrainian спові́льнення
  • спові́льнення (spovílʹnennja)the act or process of decelerating

Rhymes & wordplay

Rhymes with deceleration

All rhymes →
Cite this entry
APA

deceleration. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/deceleration

MLA

“deceleration.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/deceleration. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “deceleration,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/deceleration.

Source: deceleration on Wiktionary, CC BY-SA 4.0.