missionary Meaning, Definition & Usage

  1. noun someone who attempts to convert others to a particular doctrine or program
  2. noun someone sent on a mission--especially a religious or charitable mission to a foreign country
    missioner.
  3. adjective relating to or connected to a religious mission
    missional.

WordNet

Mis"sion*ary noun
Etymology
Cf. F. missionnaire. See Mission, n.
Wordforms
plural Missionaries
Definitions
  1. One who is sent on a mission; especially, one sent to propagate religion. Swift.
Mis"sion*a*ry adjective
Definitions
  1. Of or pertaining to missions; as, a missionary meeting; a missionary fund.

Webster 1913