locator

The word "locator" is a modern English agent noun formed directly from the verb "locate," which entered English in the 16th century from the Latin past participle locatus of the verb locare, meaning "to place." The root loc- originates from the Latin noun locus, signifying "a place, spot, or position," a word of uncertain but likely Proto-Indo-European origin. The suffix -ator is the Latin agentive suffix, equivalent to English "-er," attached to verb stems to denote the actor. Therefore, the literal morpheme logic of "locator" is transparently "one who or that which places or finds a place," evolving from the concrete act of placing something to the modern abstract sense of a person or device that identifies or determines a position.