The act of occupying or taking possession of a building(noun)
WordNet. Princeton University. 2010.
Use "moving in" in a sentence
"Wade Barton hulked and loomed over her as she stood motionless, her eyes closed, her lips moving in silent prayer."
"Since Lisa thinks moving in together is a positive step, Barrys resistance is seen as him not liking her and not wanting to be in the relationship."
"Two protoplanets—the Earth and the Moon—now separate gaseous eddies mutually trapped in their gravitational pull, moving in tandem orbit around the Sun and growing more dense."