up-and-down+motion

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• up-and-down — | ̷ ̷ ̷ ̷| ̷ ̷ adjective Etymology: up (I) and down 1. : marked by alternate upward and downward movement or action an odd up and down gait in his natural up and down voice I.S.Cobb many such up and down years Thomas H …   Useful english 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

• Up and down — Down Down, adv. [For older adown, AS. ad[=u]n, ad[=u]ne, prop., from or off the hill. See 3d {Down}, and cf. {Adown}, and cf. {Adown}.] 1. In the direction of gravity or toward the center of the earth; toward or in a lower place or position;… …   The Collaborative International Dictionary of English

• Up and down — Up Up ([u^]p), adv. [AS. up, upp, [=u]p; akin to OFries. up, op, D. op, OS. [=u]p, OHG. [=u]f, G. auf, Icel. & Sw. upp, Dan. op, Goth. iup, and probably to E. over. See {Over}.] [1913 Webster] 1. Aloft; on high; in a direction contrary to that of …   The Collaborative International Dictionary of English

• motion picture — motion picture, adj. 1. a sequence of consecutive pictures of objects photographed in motion by a specially designed camera (motion picture camera) and thrown on a screen by a projector (motion picture projector) in such rapid succession as to… …   Universalium

• Motion compensation — is an algorithmic technique employed in the encoding of video data for video compression, for example in the generation of MPEG 2 files. Motion compensation describes a picture in terms of the transformation of a reference picture to the current… …   Wikipedia

• Motion capture — Motion capture, motion tracking, or mocap are terms used to describe the process of recording movement and translating that movement on to a digital model. It is used in military, entertainment, sports, and medical applications, and for… …   Wikipedia

• Down — Down, adv. [For older adown, AS. ad[=u]n, ad[=u]ne, prop., from or off the hill. See 3d {Down}, and cf. {Adown}, and cf. {Adown}.] 1. In the direction of gravity or toward the center of the earth; toward or in a lower place or position; below;… …   The Collaborative International Dictionary of English

• Down helm — Down Down, adv. [For older adown, AS. ad[=u]n, ad[=u]ne, prop., from or off the hill. See 3d {Down}, and cf. {Adown}, and cf. {Adown}.] 1. In the direction of gravity or toward the center of the earth; toward or in a lower place or position;… …   The Collaborative International Dictionary of English

• Down on — Down Down, adv. [For older adown, AS. ad[=u]n, ad[=u]ne, prop., from or off the hill. See 3d {Down}, and cf. {Adown}, and cf. {Adown}.] 1. In the direction of gravity or toward the center of the earth; toward or in a lower place or position;… …   The Collaborative International Dictionary of English

• Down upon — Down Down, adv. [For older adown, AS. ad[=u]n, ad[=u]ne, prop., from or off the hill. See 3d {Down}, and cf. {Adown}, and cf. {Adown}.] 1. In the direction of gravity or toward the center of the earth; toward or in a lower place or position;… …   The Collaborative International Dictionary of English