Wordnet 3.0
NOUN (1)
1. 
 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"- Example: "the succession of flashing lights gave an illusion of movement"[syn: apparent motion, motion, apparent movement, movement]
WordNet (r) 3.0 (2006):
apparent motion
    n 1: 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]