The definition of a motion is a movement or a proposal for action.(noun)
Motion is defined as to signal with a movement.(verb)
An example of motion is to wave at someone to invite them over to your table.
See motion in Webster's New World College Dictionary
Origin: ME mocioun < L motio (gen. motionis), a moving < motus, pp. of movere, move
See motion in American Heritage Dictionary 4
Origin: Middle English mocioun
Origin: , from Old French motion
Origin: , from Latin mōtiō, mōtiōn-
Origin: , from mōtus
Origin: , past participle of movēre, to move; see meuə- in Indo-European roots.
See motion in Ologies
See also travel.
the tendency of some plants to grow in a direction away from the sun.
the tendency of some plants to grow away from the earth and the pull of gravity. —apogeotropic, adj.
slowness of movement. —bradykinetic, adj.
the property of some plants and animals of moving toward or away from certain chemicals.
growth or motion in response to a chemical stimulus. —chemotropic, adj.
the capacity or tendency of some plants to adopt a position transverse to the line of force of an external stimulus. — diatropic, adj.
growth or movement of an organism in response to an electric current. —galvanotropic, adj.
the movement of an organism in response to the force of gravity.
the study of the motion of bodies considered independently of external forces. Also called phoronomy. —kinematic, adj.
a mania for movement.
the branch of physics that studies the motion of masses in relation to the forces acting on them.
an abnormal fear or dislike of motion. Also called dromophobia.
movement of bodies, organisms, etc., in response to the stimulus of light. —photokinetic, adj.
the movement of an organism away from or toward a source of light. —phototactic, adj.
motion in a particular direction under the stimulus of light, as exhibited by certain plants, organisms, etc. —phototropic, adj.
the tendency of certain living things to move in response to the mechanical stimulus of a current of water.
orientation or movement of an organism in response to the stimulus of a solid object. Cf. stereotropism. —stereotactic, adj.
growth or movement determined by contact with a solid. Also called thigmotropism. Cf. stereotaxis. —stereotropic, adj.
an abnormal fear of speed.
stereotropism. —thigmotropic, adj.
Rare. the science of rotary motion. —trochilic, adj.
the movement of cells in relation to food or nutritive matter. —trophotropic, adj.
the tendency of a plant, animal, or part to move or turn in response to an external stimulus, as sunlight or temperature. —tropistic, adj.
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