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say it: MOH-shuhn
motion is a noun and verb meaning "the use of movements (especially of the hands) to communicate familiar or prearranged signals". It carries 8 recorded senses.
the use of movements (especially of the hands) to communicate familiar or prearranged signals
a natural event that involves a change in the position or location of something
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”
a state of change
“they were in a state of steady motion”
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”
show, express or direct through movement
“He gestured his desire to leave”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for motion come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.