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block diagram

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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.
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Origin of block diagram

First recorded in 1920–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for block diagram

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
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012