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Adjective: propulsive  pru'púl-siv
  1. Tending to or capable of propelling
    "the faster a jet plane goes the greater its propulsive efficiency"; "universities...the seats of propulsive thought";
    - propellant, propellent
  2. Having the power to propel
    "propulsive coefficient"

See also: dynamic, dynamical

Encyclopedia: Propulsive