—v.t. 1. to cause to combine or coalesce; unite.
2. to combine, blend, or unite gradually so as to blur the individuality or individual identity of: They voted to merge the two branch offices into a single unit.
—v.i. 1. to become combined, united, swallowed up, or absorbed; lose identity by uniting or blending (often fol. by in or into): This stream merges into the river up ahead. 2. to combine or unite into a single enterprise, organization, body, etc.: The two firms merged last year.