Definition of diagram noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈdaɪəɡræm//
; NAmE NAmE//ˈdaɪəɡræm//
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a simple drawing using lines to explain where something is, how something works, etc. a diagram of the wiring system The results are shown in diagram 2. Word Originearly 17th cent.: from Latin diagramma, from Greek, from diagraphein ‘mark out by lines’, from dia ‘through’ + graphein ‘write’.Extra examples Compare this system to the one shown in diagram B. Draw a simple diagram of the leaf structure. See the diagram on page 31. The trees will be planted at the points marked on the diagram. a diagram of the human nervous system a flow diagram showing the stages in the printing process She drew a diagram of an electrical circuit on the board. The diagram illustrates the difference between the two processes. The diagram indicates the rate at which population is increasing. The whole process can be shown in a simple diagram. There are no charts or diagrams in the book to help the reader understand the concept.
See the Oxford Advanced American Dictionary entry: diagram