Learn how to say Diagrams correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word diagram:
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)
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.
early 17th century: from Latin diagramma, from Greek, from diagraphein ‘mark out by lines’, from dia ‘through’ + graphein ‘write’