[dahy-uh-graf, -grahf]


a device for drawing, used in reproducing outlines, plans, etc., mechanically on any desired scale.
a combined protractor and scale.

Origin of diagraph

1840–50; < French diagraphe < Greek diagráphein to draw. See dia-, -graph
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for diagraph

Historical Examples of diagraph

  • In the orthography of the Félibres the diagraph ue is used as we find it in Old French to represent this vowel.

    Frdric Mistral

    Charles Alfred Downer

British Dictionary definitions for diagraph



a device for enlarging or reducing maps, plans, etc
a protractor and scale used in drawing

Word Origin for diagraph

C19: from French diagraphe, from Greek diagraphein to represent with lines; see diagram
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012