-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).
Origin
< Greek -graphos (something) drawn or written, one who draws or writes. See grapho-
British Dictionary definitions for -graph

-graph

combining form
1.
an instrument that writes or records: telegraph
2.
a writing, record, or drawing: autograph, lithograph
Derived Forms
-graphic, -graphical, combining_form:in_adjective
-graphically, combining_form:in_adverb
Word Origin
via Latin from Greek -graphos, from graphein to write
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).

-graph in Medicine

-graph suff.
An instrument for writing, drawing, or recording: cardiograph.