The definition of an emissary is a person sent on a mission, especially a diplomatic mission.
(noun)A diplomat sent to a foreign country to make peace is an example of an emissary.
See emissary in Webster's New World College Dictionary
noun pl. emissaries
Origin: L emissarius < pp. of emittere: see emit
adjective
See emissary in American Heritage Dictionary 4
noun pl. em·is·sar·ies
Origin:
Origin: Latin ēmissārius
Origin: , from ēmissus
Origin: , past participle of ēmittere, to send out; see emit
.Learn more about emissary