English to English

noun (n)

• ability to move spontaneously and independently(noun.attribute)

  Antonym:
  immotility
  

  source: wordnet30
• a change of position that does not entail a change of location(noun.act)

  Example:
  Gastrointestinal motility.
  

  Synonym:
  motion, move, movement
  

  source: wordnet30
• Capability of motion; contractility.(noun)

  source: webster1913