Motion

mō′shun, n. the act or state of moving: a single movement: change of posture: gait: power of moving or of being moved: angular velocity— direct when from west to east; retrograde when from east to west: excitement of the mind: any natural impulse, instigation: proposal made, esp. in an a embly: an application to a court, during a case before it, for an order or rule that something be done, esp. something incidental to the progre of the cause rather than its i ue: evacuation of the intestine: ( pl. , B. ) impulses.— v.i. to make a significant movement, to offer a proposal.— v.t. to guide by a gesture, .: to move.— adj. Mō′tile , capable of spontaneous motion.— n. Motil′ity .— adj. Mo′tional , characterised by motions.— n. Mō′tionist , one who makes a motion.— adj. Mō′tion le , without motion.— Absolute motion , change of absolute place; Accelerated motion , motion of which the velocity is continually increasing; Angular motion , motion regarded as measured by the increase of the angle made with some standard direction by a line drawn from the moving object to a fixed point; Laws of motion , Newton's three laws: (1) Every body continues in its state of rest, or of uniform motion in a straight line, except so far as it may be compelled by force to change that state; (2) Change of motion is proportional to force applied, and takes place in the direction of the straight line in which the force acts; (3) To every action there is always an equal and contrary reaction; Parallel motion (see Parallel ); Perpetual motion (see Perpetual ); Quantity of motion , momentum. [Fr.,—L.,— movēre , mōtum , to move.]