Temporal integration was the process of taking versions of a person from different time periods and/or timelines and integrating them into a single person.
Captain Braxton's first officer, Ducane, stated that the version of Braxton from before he had succumbed to temporal psychosis would be temporally integrated with two other versions of him, both of which were from a point in the future after which Braxton had succumbed to temporal psychosis, so that Braxton could stand trial. (VOY: "Relativity")
A similar, transporter method was used to restore the "default" versions of Captain Christopher and the Air Force Staff sergeant. They were beamed (with memories that could contaminate the timeline) into their own selves before encountering the crew of the Enterprise. (TOS: "Tomorrow is Yesterday")
Data likewise integrated his selves (one, from 1 minute: 10 seconds before carrying the antimatter-and the other, from after walking it over to the anomaly) to close a temporal fissure. Standing in the middle, and "correct" time continuum, he had the other two androids physically merge with him. All three Datas simultaneously sealed the time/gravity hole. (TNG: "We'll Always Have Paris")
While Worf was in quantum flux, over 285,000 (and more, multiplying geometrically) duplicates of himself from other universes physically worked in sync. Aboard the shuttle Curie, the omni-timeline Worfs erase the warp field inversion from ever occurring. Each respective version is returned to his place of reality, with the aforementioned consequences erased from happening (again). (TNG: "Parallels")