| Ultimate biochemical oxygen demand (BODu) | (Environmental Engineering) The total amount of oxygen required to oxidize any organic matter present in a water, i.e. after an extended period, such as 20 or 30 days. |
| Volatile solids | (Environmental Engineering) (VS) is the amount of matter which volatilizes (or burns) when a water sample is heated to 550EC.Volatile suspended solids |
| Weak acid | (Environmental Engineering) An acid that does not ionize completely under the conditions of interest. Examples include acetic acid, carbonic acid, and hypochlorous acid. See strong acid. |
| Agile development (also referred to as agile process model) - | (Software Engineering) an adapted version of software engineering that emphasizes customer communication, incremental software delivery, informal methods and work products, and highly motivated teams. |
| Basis path testing - | (Software Engineering) a white box test case design technique that used the algorithmic flow of the program to design tests |
| Black box testing - | (Software Engineering) testing that does not focus on the internal details of the program but uses external requirements |
| Bounding - | (Software Engineering) removing ambiguity from specification |
| Change control - | (Software Engineering) an umbrella process that enables a project team to accept, evaluate, and act on changes in a systematic manner |
| Chief programmer team - | (Software Engineering) one way of organizing project staff |
| Clusters - | (Software Engineering) a collection of program components (modules) that is tested as a group |