retrograde motion

Motion of a body (either real or apparent) in a direction opposite to that of its normal motion, or to that of other similar or related bodies

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  • Retrograde motion — This article is about retrograde motions of celestial bodies relative to a gravitationally central object. For the apparent motion as seen from a particular vantage point, see Apparent retrograde motion. Retrograde orbit: the satellite (red)… …   Wikipedia

  • retrograde motion — In astronomy, the actual or apparent motion of a body in a direction opposite to that of the predominant (direct or prograde) motions of similar bodies. Observationally and historically, retrograde motion refers to the apparent reversal of the… …   Universalium

  • retrograde motion — atgalinis judėjimas statusas T sritis fizika atitikmenys: angl. back motion; backward motion; retrograde motion vok. Rücklaufbewegung, f; Rückwärtsbewegung, f rus. обратное движение, n pranc. mouvement de retour, m; mouvement rétrograde, m …   Fizikos terminų žodynas

  • retrograde — [re′trə grād΄] adj. [ME < L retrogradus < retrogradi, to go backward: see RETRO & GRADE] 1. moving or directed backward; retiring or retreating 2. inverse or reverse: said of order 3. going back or tending to go back to an earlier, esp.… …   English World dictionary

  • Retrograde — Re tro*grade, a. [L. retrogradus, from retrogradi, retrogressus, to retrograde; retro back + gradi to step: cf. F. r[ e]trograde. See {Grade}.] 1. (Astron.) Apparently moving backward, and contrary to the succession of the signs, that is, from… …   The Collaborative International Dictionary of English

  • retrograde — ► ADJECTIVE 1) directed or moving backwards. 2) (of the order of something) reversed; inverse. 3) reverting to an earlier and inferior condition. 4) chiefly Astronomy proceeding in a reverse direction from normal, especially (of planetary motion) …   English terms dictionary

  • Retrograde and direct motion — Direct motion is the motion of a planetary body in a direction similar to that of other bodies within its system, and is sometimes called prograde motion. Retrograde motion is motion in the opposite direction. In the case of celestial bodies,… …   Wikipedia

  • retrograde — I. adjective Etymology: Middle English, from Latin retrogradus, from retrogradi Date: 14th century 1. a. (1) having or being motion in a direction contrary to that of the general motion of similar bodies and especially east to west among the… …   New Collegiate Dictionary

  • retrograde — retrogradely, adv. retrogradingly, adv. /re treuh grayd /, adj., v., retrograded, retrograding. adj. 1. moving backward; having a backward motion or direction; retiring or retreating. 2. inverse or reversed, as order. 3. Chiefly Biol. exhibiting… …   Universalium

  • retrograde — /ˈrɛtrəgreɪd / (say retruhgrayd) adjective 1. moving backwards; having a backward motion or direction; retiring or retreating. 2. returning to an earlier and inferior state: a retrograde step. 3. inverse or reversed, as order. 4. Chiefly Biology… …   Australian English dictionary

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