1640s, from propuls-, past-participle stem of Latin propellere "to propel" (see propel) + -ive.
propulsive coefficient
universities...the seats of propulsive thought
the faster a jet plane goes the greater its propulsive efficiency
proprietary
proprietor
propriety
proprioception
propulsion
propulsive
prorate
proration
prorogue
prosaic
proscenium
