mediate (v.)

1540s, "divide in two equal parts," probably a back-formation from mediation or mediator, or else from Latin mediatus, past participle of mediare "to halve," later, "be in the middle," from Latin medius "middle" (from PIE root *medhyo- "middle"). Meaning "act as a mediator" is from 1610s; that of "settle by mediation" is from 1560s. Related: Mediated, mediates, mediating.

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