Definition of diagram in English:


Line breaks: dia|gram
Pronunciation: /ˈdʌɪəgram


  • 1A simplified drawing showing the appearance, structure, or workings of something; a schematic representation: a diagram of the living room
    More example sentences
    • They are packed with detail but it doesn't seem overwhelming because the pages are broken up with masses of superb colour photographs, maps, street-by-street diagrams and drawings.
    • Apart from the run-of-the-mill stuff like e-mail and word processing, he is teaching himself to use the computer to draw schematic diagrams.
    • The data are summarized in the schematic diagram below.
    drawing, line drawing, illustration, picture, artist's impression; schematic representation, representation, scale drawing, technical drawing, plan, figure, sketch, draft, outline, delineation, exploded view, cutaway, layout; Computing graphic
    rare schema
  • 1.1 Geometry A figure composed of lines that is used to illustrate a definition or statement or to aid in the proof of a proposition.
    More example sentences
    • Along with many line diagrams and equations, the problems and ‘mathematical meanderings’ strengthen concepts in each chapter.
    • Stefan handed some chalk to Spencer who began drawing various diagrams on the board.
  • 1.2British A graphical schedule for operating railway locomotives and rolling stock in order to provide a desired service.
    More example sentences
    • But a number of photographs feature interesting vehicles and are supplemented by coach diagrams, schedules and menus.
    • Another 12 Class 317 electric trains and 14 more Class 319 units will ensure all diagrams can be run.
    • A navigational system pinpoints the train's position in relation to track diagrams.

verb (diagrams, diagramming, diagrammed; US diagrams, diagraming, diagramed)

[with object] Back to top  
  • 1Represent (something) in graphic form: the experiment is diagrammed on page fourteen
    More example sentences
    • The screening method is diagrammed in Fig 1A and represents a modification of the crossing design of COYNE et al. 1998.
    • The Kensico Cemetery burial card diagrams the wedge-shaped plot, 5 feet by 8 by 40.
    • By diagramming actual people in actual relationships, we are introducing both mechanical and conceptual problems.
  • 1.1British Schedule the operations of (a locomotive or train) according to a diagram.


early 17th century: from Latin diagramma, from Greek, from diagraphein 'mark out by lines', from dia 'through' + graphein 'write'.

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