preliminary design
nounUK /prɪˈlɪmɪnəri dɪˈzaɪn/
US /prɪˈlɪməneri dɪˈzaɪn/
A first, simple drawing or plan made before the real one is built.
The team made a preliminary design of the new playground before building it.
OTHER MEANINGS
2. An early version of a product used to test ideas.
Engineers shared a preliminary design of the robot with the class.
3. The first stage of planning a building or machine.
During the preliminary design, they decided where the windows would go.
4. A simple model that helps people agree before detailed work begins.
The preliminary design helped everyone agree on the shape of the car.