Definitions for "Quasi Contract"
An obligation similar in nature to a contract, arising not from an agreement of the parties but from some relation between them or from a voluntary act of one of them. Also, a situation imposed by law to prevent unjust enrichment or injustice and not dependent on agreement of the parties to the contract.
a contract created by law for reasons of justice without any expression of assent
a contract that exists by order of a court, not by agreement of the parties