Motion - Definition

n 1: the use of movements (especially of the hands) to
communicate familiar or prearranged signals [syn:
gesture, motion]
2: a natural event that involves a change in the position or
location of something [syn: movement, motion]
3: a change of position that does not entail a change of
location; "the reflex motion of his eyebrows revealed his
surprise"; "movement is a sign of life"; "an impatient move
of his hand"; "gastrointestinal motility" [syn: motion,
movement, move, motility]
4: a state of change; "they were in a state of steady motion"
[ant: lifelessness, motionlessness, stillness]
5: a formal proposal for action made to a deliberative assembly
for discussion and vote; "he made a motion to adjourn"; "she
called for the question" [syn: motion, question]
6: the act of changing location from one place to another;
"police controlled the motion of the crowd"; "the movement of
people from the farms to the cities"; "his move put him
directly in my path" [syn: motion, movement, move]
7: an optical illusion of motion produced by viewing a rapid
succession of still pictures of a moving object; "the cinema
relies on apparent motion"; "the succession of flashing
lights gave an illusion of movement" [syn: apparent motion,
motion, apparent movement, movement]
v 1: show, express or direct through movement; "He gestured his
desire to leave" [syn: gesticulate, gesture, motion]