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-graph

  1. a combining form meaning “drawn,” “written” (lithograph; monograph); specialized in meaning to indicate the instrument rather than the written product of the instrument (telegraph; phonograph).
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Origin of -graph

< Greek -graphos (something) drawn or written, one who draws or writes. See grapho-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for -graph

-graph

n combining form
  1. an instrument that writes or recordstelegraph
  2. a writing, record, or drawingautograph; lithograph
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Derived Forms-graphic or -graphical, adj combining form-graphically, adv combining form

Word Origin

via Latin from Greek -graphos, from graphein to write
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

Word Origin and History for -graph

word-forming element meaning "instrument for recording; something written," from Greek graphe "writing," from graphein "to write, express by written characters," earlier "to draw, represent by lines drawn" (see -graphy).

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Online Etymology Dictionary, © 2010 Douglas Harper

-graph in Medicine

-graph

suff.
  1. An instrument for writing, drawing, or recording:cardiograph.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.