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graph

[graf, grahf]
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noun
  1. a diagram representing a system of connections or interrelations among two or more things by a number of distinctive dots, lines, bars, etc.
  2. Mathematics.
    1. a series of points, discrete or continuous, as in forming a curve or surface, each of which represents a value of a given function.
    2. Also called linear graph.a network of lines connecting points.
  3. a written symbol for an idea, a sound, or a linguistic expression.
verb (used with object)
  1. Mathematics. to draw (a curve) as representing a given function.
  2. to represent by means of a graph.

Origin of graph

1875–80; short for graphic formula; see graphic
Related formsre·graph, verb (used with object)

Synonyms

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1. See map.

graph-

  1. variant of grapho- before a vowel: grapheme.

-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 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

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British Dictionary definitions for graph

graph

noun
  1. Also called: chart a drawing depicting the relation between certain sets of numbers or quantities by means of a series of dots, lines, etc, plotted with reference to a set of axesSee also bar graph
  2. maths a drawing depicting a functional relation between two or three variables by means of a curve or surface containing only those points whose coordinates satisfy the relation
  3. maths a structure represented by a diagram consisting of points (vertices) joined by lines (edges)
  4. linguistics a symbol in a writing system not further subdivisible into other such symbols
verb
  1. (tr) to draw or represent in a graph

Word Origin

C19: short for graphic formula

-graph

n combining form
  1. an instrument that writes or recordstelegraph
  2. a writing, record, or drawingautograph; lithograph
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

n.

1878, shortening of graphic formula (see graphic). The verb meaning "charted on a graph" is from 1889. Related: Graphed; graphing.

-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).

Online Etymology Dictionary, © 2010 Douglas Harper

graph in Medicine

-graph

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

graph in Science

graph

[grăf]
  1. A diagram showing the relationship of quantities, especially such a diagram in which lines, bars, or proportional areas represent how one quantity depends on or changes with another.
  2. A curve or line showing a mathematical function or equation, typically drawn in a Cartesian coordinate system. The graph of the function y = x2 is a parabola.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.