n. The act of possessing, or the state of being possessed; the having, holding, or detaining of property in one's power or control; the state of owning or controlling; actual seizing or occupancy, either rightful or wrongful. One man may have the possession of a thing, and another may have the right of property in it.n. In law, the physical control which belongs of right to unqualified ownership; the having a thing in such manner as to exclude the control of other persons; that detention of or dominion over a thing by one person which precludes others from the adverse physical occupancy of or dominion over it.n. The thing possessed; in the plural, goods, land, or rights owned; belongings: as, your friendship is one of my richest possessions; the French possessions.n. Hence Property; wealth.n. In international law, a country or territory held by right of conquest.n. Persuasion; conviction.n. The state of being under the control of evil spirits or of madness; madness; lunacy: as, demoniacal possession.To invest with property.n. In the terminology of psychical research, a change of mental disposition, occurring in the state of trance, so marked as to suggest the substitution of a novel personality for the known personality of the subject.