Meaning of diagram in English:


Pronunciation /ˈdʌɪəɡram/

See synonyms for diagram

Translate diagram into Spanish


  • 1A simplified drawing showing the appearance, structure, or workings of something; a schematic representation.

    ‘a diagram of the living room’
    • ‘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.’
    • ‘The text also includes many diagrams of molecular structures and points out the relevance and importance of the chemical structure to the pharmacological action.’
    • ‘This diagram shows the complex structure of Saturn's magnetosphere.’
    • ‘A diagram of the hillside structure is shown on Page 82.’
    • ‘Schematic diagrams of the probe and of the entire spectroscopy system are shown in Fig.1.’
    • ‘The first weeks of the course deal with electronic principles, electrical-current theory, and the skills needed to interpret equipment diagrams and schematics.’
    • ‘The system can be used to display schematic diagrams of the aircraft's principal sub-systems.’
    • ‘On the second point, I think the member has heard the explanation many times before: a graph or a diagram appeared in a document that was not authorised by the Prime Minister or me.’
    • ‘Fig.14 shows schematic diagrams representing this type of situation.’
    • ‘A summary flow diagram of patients enrolled in the study is depicted in Figure 1.’
    • ‘Follow the manufacturer's wiring diagram to make the connection to your power supply.’
    • ‘In the following paragraphs I will use four simple diagrams to present the argument.’
    • ‘For every birdhouse, you'll find a photo, an exploded diagram of all sides, and simple instructions.’
    • ‘Line drawings and diagrams in the text figures are typically well designed and informative.’
    • ‘The text is well illustrated with excellent diagrams, sketches and figures.’
    • ‘The dissertation is well organized with many fascinating diagrams, charts and figures.’
    • ‘The book is profusely illustrated, with diagrams showing clearly the techniques described.’
    • ‘The diagrams illustrating the normal histology of the spleen are comprehensible and significantly clarify a fairly complicated system.’
    drawing, line drawing, illustration, picture, artist's impression
    View synonyms
    1. 1.1Geometry A figure composed of lines that is used to illustrate a definition or statement or to aid in the proof of a proposition.
      ‘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.’
    2. 1.2British A graphical schedule for operating railway locomotives and rolling stock in order to provide a desired service.
      ‘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.’
      • ‘To see a layout diagram of Amtrak's sleepers click here.’
      • ‘It was an ‘expo on wheels’, displaying the highlights of the railway network through charts, diagrams, photographs and working models.’

verbverb diagrams, verb diagramming, verb diagrammed; US verb diagraming, US verb diagramed

[with object]
  • 1Represent (something) in graphic form.

    ‘the experiment is diagrammed on page fourteen’
    • ‘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.’
    • ‘It is an attempt to diagram the allies, enemies, cousins, straw men, party followers, puppets, and courtiers and their relationships.’
    • ‘There assistants corrected the proportions of the initial sketches in carefully diagrammed drawings and clay models so they conformed to the perfect mathematical ratios.’
    • ‘I might instead attempt to diagram its structure, insofar as I am able to apprehend it.’
    • ‘Take note of all important aspects of the collision and then if possible diagram the exact position of the vehicles before and after the accident.’
    • ‘Fig 1A.2 diagrams the G matrix and PCs associated with two populations, both of which have the modules diagrammed in Fig 1A.1.’
    • ‘This simplified figure fails to show the interrelationship between those two processes and unrealistically diagrams the recombination as reciprocal.’
    • ‘He also diagrams the road graph that gives rise to this state of affairs.’
    • ‘In the heat of the action, the coach eagerly diagrams a play and talks his players through it.’
    • ‘Unfortunately, this way of diagramming the results tends to lull us into thinking that all the evolutionary changes occurred at those nodes, and none along the branches.’
    • ‘He assembled all the helicopter crews and briefed them on the mission, diagramming the procedure on butcher-block paper.’
    • ‘All we see are coaches discussing certain planned options, not actually diagramming the procedures for us.’
    • ‘He diagrammed it on a piece of paper, then shared it with Nick Scheele and Jim Padilla.’
    • ‘Our experimental set-up is diagrammed in Figure 2A.’
    • ‘This coordinated ECR model is diagrammed in Fig 5.’
    • ‘Although only three lineages are diagrammed, in reality an average of >100 lineages were propagated for each genotype.’
    • ‘A genetic map showing the 16 chromosomes of yeast is diagrammed.’
    • ‘In terms of the competition of routes, he diagrammed cases where more roundabout routes may be economically defensible.’
    1. 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’.