| 1. | a chart or diagram using labeled blocks connected by straight lines to represent the relationship of parts or phases, as the steps in a data-processing application. Compare flow chart (def. 2). |
| 2. | Geology. a perspective representation of the geology of an area showing surface contours and generally including two vertical cross sections. |
| block diagram | |
noun | |
| a diagram showing the interconnections between the components of system (especially an electronic system) |