rapidity
noun Date: 1654 the quality or state of being rapid

New Collegiate Dictionary. 2001.

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  • Rapidity — Ra*pid i*ty (r[.a]*p[i^]d [i^]*t[y^]), n. [L. rapiditas: cf. F. rapidit[ e].] The quality or state of being rapid; swiftness; celerity; velocity; as, the rapidity of a current; rapidity of speech; rapidity of growth or improvement. [1913 Webster] …   The Collaborative International Dictionary of English

  • rapidity — index dispatch (promptness), haste Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • rapidity — (n.) 1650s, from L. rapiditatem, from rapidus (see RAPID (Cf. rapid)) …   Etymology dictionary

  • rapidity — [n] quickness acceleration, alacrity, bat, briskness, celerity, dispatch, expedition, fleetness, gait, haste, hurry, pace, precipitateness, promptitude, promptness, rapidness, rush, speed, speediness, swiftness, velocity; concepts 755,805 Ant.… …   New thesaurus

  • rapidity — noun ADJECTIVE ▪ alarming, amazing, astonishing, bewildering, great, remarkable ▪ The styles change with bewildering rapidity. ▪ increasing …   Collocations dictionary

  • rapidity — n. (with) lightning rapidity * * * [rə pɪdɪtɪ] (with) lightning rapidity …   Combinatory dictionary

  • rapidity — rapid ► ADJECTIVE ▪ happening in a short time or at great speed. ► NOUN (usu. rapids) ▪ a fast flowing and turbulent part of the course of a river. DERIVATIVES rapidity noun rapidly adverb. ORIGIN Latin rapidus, from rapere take by force …   English terms dictionary

  • Rapidity — Die Rapidität ist ein alternatives Maß für Geschwindigkeit, das gelegentlich in der Speziellen Relativitätstheorie verwendet wird. Erstmals formuliert wurde der Begriff von Alfred Robb (1911). Die Rapidität θ ist als θ = tanh − 1(v / c) definiert …   Deutsch Wikipedia

  • rapidity — /reuh pid i tee/, n. a rapid state or quality; quickness; celerity. Also, rapidness /rap id nis/. [1610 20; < L rapiditas. See RAPID, ITY] Syn. swiftness, fleetness. See speed. * * * …   Universalium

  • rapidity — noun a) speed, swiftness; the condition of being rapid b) A measure of velocity relative to the speed of light …   Wiktionary

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