block diagram

noun

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

1. a diagram showing the interconnections between the parts of an industrial process
2. a three-dimensional drawing representing a block of the earth's crust, showing geological structure
3. computing a diagram showing the interconnections between electronic components or parts of a program

Word History and Origins

Origin of block diagram¹

First recorded in 1920–25