What is motion?

  • (noun): A change of position that does not entail a change of location.
    Example: "The reflex motion of his eyebrows revealed his surprise"
    Synonyms: movement, move, motility
    See also — Additional definitions below

More definitions of "motion":

  • (noun): A natural event that involves a change in the position or location of something.
    Synonyms: movement
  • (noun): The use of movements (especially of the hands) to communicate familiar or prearranged signals.
    Synonyms: gesture
  • (noun): A formal proposal for action made to a deliberative assembly for discussion and vote.
    Example: "He made a motion to adjourn"
    Synonyms: question
  • (noun): The act of changing location from one place to another.
    Example: "Police controlled the motion of the crowd"
    Synonyms: movement, move
  • (noun): An optical illusion of motion produced by viewing a rapid succession of still pictures of a moving object.
    Example: "The cinema relies on apparent motion"
    Synonyms: apparent motion, apparent movement, movement
  • (noun): A state of change.
    Example: "They were in a state of steady motion"

Famous quotes containing the word motion:

    The motion picture is like a picture of a lady in a half- piece bathing suit. If she wore a few more clothes, you might be intrigued. If she wore no clothes at all, you might be shocked. But the way it is, you are occupied with noticing that her knees are too bony and that her toenails are too large. The modern film tries too hard to be real. Its techniques of illusion are so perfect that it requires no contribution from the audience but a mouthful of popcorn.
    Raymond Chandler (1888–1959)

    Motion or change, and identity or rest, are the first and second secrets of nature: Motion and Rest. The whole code of her laws may be written on the thumbnail, or the signet of a ring.
    Ralph Waldo Emerson (1803–1882)

    All the phenomena which surround him are simple and grand, and there is something impressive, even majestic, in the very motion he causes, which will naturally be communicated to his own character, and he feels the slow, irresistible movement under him with pride, as if it were his own energy.
    Henry David Thoreau (1817–1862)