A simplified drawing showing the appearance, structure, or workings of something; a schematic representation. noun
The engineer drew a diagram to explain how the machine works.
The teacher used a diagram to illustrate the water cycle to the students.
A graphic design that explains rather than represents; especially a drawing that shows arrangement and relations (as of parts). noun
The diagram of the family tree helped us understand our ancestry.
In the textbook, there is a diagram that shows the relationship between different species.
To represent something in graphic form. verb
The architect diagrammed the layout of the new building.
She diagrammed the sentence to better understand its grammatical structure.