1.Accounting: Earmarking or setting-aside of funds in response to a purchase requisition. These funds remain committed (encumbered) until the purchased good or service is paid-for after its receipt, thereby converting the encumbrance into an expenditure. See also obligation.
2.Lending: Written assurance from a lender to a borrower that a specified amount of loan or line of credit will be made available at a certain rate and during a certain period. Lenders charge a commitment fee for this service.
Use commitment in a sentence