diagram

 
Pronunciation: /ˈdʌɪəgram/

noun

  • a simplified drawing showing the appearance, structure, or workings of something; a schematic representation: a diagram of the living room
  • Geometry a figure composed of lines that is used to illustrate a definition or statement or to aid in the proof of a proposition.
  • British a graphical schedule for operating railway locomotives and rolling stock in order to provide a desired service.

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

[with object]
  • represent (something) in graphic form: the experiment is diagrammed on page fourteen
  • British schedule the operations of (a locomotive or train) according to a diagram.

Origin:

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