1. a decrease in rate of change (Freq. 1)

the deceleration of the arms race

Syn: ↑deceleration, ↑slowing
Ant: ↑acceleration (for: ↑deceleration)
Derivationally related forms: ↑retard, ↑slow (for: ↑slowing), ↑decelerate (for: ↑deceleration)
Hypernyms: ↑change, ↑alteration, ↑modification
2. the extent to which something is delayed or held back
Derivationally related forms: ↑retard
Hypernyms: ↑delay, ↑hold, ↑time lag, ↑postponement, ↑wait
3. the act of slowing down or falling behind
Syn: ↑slowdown, ↑lag
Derivationally related forms: ↑retard, ↑lag (for: ↑lag), ↑slow down (for: ↑slowdown)
Hypernyms: ↑delay, ↑holdup
4. any agent that retards or delays or hinders


Syn: ↑retardant, ↑retardent
Derivationally related forms: ↑retard
Hypernyms: ↑agent
5. lack of normal development of intellectual capacities
Derivationally related forms: ↑subnormal (for: ↑subnormality), ↑slow (for: ↑slowness), ↑backward (for: ↑backwardness), ↑retard
Hypernyms: ↑stupidity

Useful english dictionary. 2012.

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Look at other dictionaries:

  • Retardation — Re tar*da tion, n. [L. retardatio: cf. F. retardation.] 1. The act of retarding; hindrance; the act of delaying; as, the retardation of the motion of a ship; opposed to {acceleration}. [1913 Webster] The retardations of our fluent motion. De… …   The Collaborative International Dictionary of English

  • Retardation — may have different meanings: * Mental retardation * Negative acceleration in mechanics (i.e. rate of decrease of velocity) * Retardation Factor, in the Advection/Dispersion transport equation (ADE) * Retarded potential in electrodynamics …   Wikipedia

  • retardation — [rē΄tär dā′shən] n. [ME < L retardatio] 1. a retarding or being retarded 2. something that retards; hindrance 3. short for MENTAL RETARDATION 4. a decrease in velocity 5. the amount that something is retarded retardative …   English World dictionary

  • retardation — retardation. См. ретардация. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Retardation — (lat., »Verzögerung«), in der Physik die Verminderung der Geschwindigkeit eines bewegten Körpers (s. Beschleunigung); in der Musik soviel wie vorbereitete Dissonanz, Vorhalt (s. d.) …   Meyers Großes Konversations-Lexikon

  • Retardation — Retardatiōn (lat.), Verzögerung, Hemmung; in der Musik: Vorhalt (s.d.); retardieren, aufhalten, verzögern …   Kleines Konversations-Lexikon

  • retardation — index check (bar), damper (stopper), delay, deterrent, disadvantage, encumbrance, filibuster …   Law dictionary

  • retardation — [ʀ(ə)taʀdɑsjɔ̃] n. f. ÉTYM. 1748; « retard », 1396; « obstacle », déb. XIVe; de retarder. ❖ ♦ Didact. Accélération négative, décélération …   Encyclopédie Universelle

  • Retardation — Retardation,die:⇨Verzögerung(1) …   Das Wörterbuch der Synonyme

  • retardation — (n.) early 15c., fact or action of making slower in movement or time, from L. retardationem, from retardare to make slow, delay, keep back, hinder, from re , intensive prefix, + tardare to slow (see TARDY (Cf. tardy)) …   Etymology dictionary

  • Retardation — (körperliche oder geistige) Reifungsverzögerung * * * Re|tar|da|ti|on 〈f. 20〉 1. 〈geh.〉 Verzögerung, Verlangsamung 2. 〈Mus.〉 Verzögerung der oberen Stimme gegenüber der unteren ● Retardation in der Entwicklung 〈Biol.〉 [<lat. retardatio… …   Universal-Lexikon

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