1. (related to organisations) "The movement of cash and cash equivalents into and out of the organisation."
2. (project-related) "the difference between the cash inflows and outflows related to the project during the time horizon in which they occur."
1. EUROCONTROL (1999) Principles for establishing the cost-base for route facility charges and the calculation of the unit rates
2. SESAR Project ID 16.06.06 D06-05 - ATM CBA for Beginners
Costs of the project lead to cash outflows and benefits to cash inflows.
Lexicon Release 2015.2