motion

The definition of a motion is a movement or a proposal for action.

(noun)

  1. An example of motion is a waving hand.
  2. An example of motion is a request by a committee member that a recommendation be accepted.

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.

YourDictionary definition and usage example. Copyright © 2013 by LoveToKnow Corp.

See motion in Webster's New World College Dictionary

noun

  1. the act or process of moving; passage of a body from one place to another; movement
  2. the act of moving the body or any of its parts
  3. a meaningful movement of the hand, eyes, etc.; gesture
  4. Rare the ability to move
  5. an impulse; inclination: of one's own motion
  6. a proposal; suggestion; esp. a proposal formally made in an assembly or meeting
  7. Law an application to a court for a ruling, order, etc.
  8. Mech. a combination of moving parts; mechanism
  9. Music melodic progression, as a change from one pitch to another in a voice part

Origin: ME mocioun < L motio (gen. motionis), a moving < motus, pp. of movere, move

intransitive verb

to make a meaningful movement of the hand, head, etc.; gesture

transitive verb

to direct or command by a meaningful gesture

Related Forms:

See motion in American Heritage Dictionary 4

noun
  1. The act or process of changing position or place.
  2. A meaningful or expressive change in the position of the body or a part of the body; a gesture.
  3. Active operation: set the plan in motion.
  4. The ability or power to move: lost motion in his arm.
  5. The manner in which the body moves, as in walking.
  6. A prompting from within; an impulse or inclination: resigned of her own motion.
  7. Music Melodic ascent and descent of pitch.
  8. Law An application made to a court for an order or a ruling.
  9. A formal proposal put to the vote under parliamentary procedures.
  10. a. A mechanical device or piece of machinery that moves or causes motion; a mechanism.
    b. The movement or action of such a device.
verb mo·tioned, mo·tion·ing, mo·tions
verb, transitive
To direct by making a gesture: motioned us to our seats.
verb, intransitive
To signal by making a gesture: motioned to her to enter.

Origin:

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

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See motion in Ologies

Motion

See also travel.

apheliotropism

the tendency of some plants to grow in a direction away from the sun.

apogeotropism

the tendency of some plants to grow away from the earth and the pull of gravity. —apogeotropic, adj.

bradykinesia

slowness of movement. —bradykinetic, adj.

chemotaxis

the property of some plants and animals of moving toward or away from certain chemicals.

chemotropism

growth or motion in response to a chemical stimulus. —chemotropic, adj.

diatropism

the capacity or tendency of some plants to adopt a position transverse to the line of force of an external stimulus. — diatropic, adj.

dromophobia

kinetophobia.

galvanotropism

growth or movement of an organism in response to an electric current. —galvanotropic, adj.

geotaxis

the movement of an organism in response to the force of gravity.

kinematics

the study of the motion of bodies considered independently of external forces. Also called phoronomy. —kinematic, adj.

kinesomania

a mania for movement.

kinetics

the branch of physics that studies the motion of masses in relation to the forces acting on them.

kinetophobia

an abnormal fear or dislike of motion. Also called dromophobia.

phoronomy

kinematics.

photokinesis

movement of bodies, organisms, etc., in response to the stimulus of light. —photokinetic, adj.

phototaxis

the movement of an organism away from or toward a source of light. —phototactic, adj.

phototropism

motion in a particular direction under the stimulus of light, as exhibited by certain plants, organisms, etc. —phototropic, adj.

rheotaxis

the tendency of certain living things to move in response to the mechanical stimulus of a current of water.

stereotaxis

orientation or movement of an organism in response to the stimulus of a solid object. Cf. stereotropism. —stereotactic, adj.

stereotropism

growth or movement determined by contact with a solid. Also called thigmotropism. Cf. stereotaxis. —stereotropic, adj.

tachophobia

an abnormal fear of speed.

thigmotropism

stereotropism. —thigmotropic, adj.

trochilics

Rare. the science of rotary motion. —trochilic, adj.

trophotropism

the movement of cells in relation to food or nutritive matter. —trophotropic, adj.

tropism

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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