› [C] PROPERTY a structure with walls and a roof, for example, a house or a factory: The museum is an impressive building. an office/apartment/industrial building › [U] PROPERTY the activity of building houses, factories, etc.: There's going to be a lot more building and a lot more development activity. He had to project-manage the building of a new factory. building materials a building project a building inspector › PRODUCTION the activity of building cars, planes, machinery, etc.: They spent millions of dollars on the building of a prototype. a car building plant
› [U] the process of creating or developing something: The building of team spirit is very important in this organization. We offer courses in assertiveness and confidence building. → Compare speculative building