A graph is a visual plotting of the relationship between two or more quantities, like a math map. To graph is to create such a chart.

The noun graph came into use in the 1800s, when people got tired of saying graphic formula and decided to chop it down. A hundred years later, the verb form of graph was first recorded. Diagram and linear representation are two synonyms for the word. The dancer Martha Graham said, “Every dance is a kind of fever chart, a graph of the heart.” Here, she uses graph to say that dance is a visual representation of what’s in the heart.

Definitions of graph

n a visual representation of the relations between certain quantities plotted with reference to a set of axes

graphical record
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the graphical record of an earth tremor made by using a seismograph
characterisic function, characteristic curve
(electronics) graph showing how a particular characteristic of a device varies with other parameters
a graphical recording made by a ballistocardiograph
a graphical image of the brain produced by an echoencephalograph
a graphical image of the heart produced by an echocardiograph
ECG, EKG, cardiogram, electrocardiogram
a graphical recording of the cardiac cycle produced by an electrocardiograph
EEG, electroencephalogram, encephalogram
a graphical record of electrical activity of the brain; produced by an electroencephalograph
a graphical recording of the electrical activity of the retina that results when light is flashed into the eye
Laffer curve
a graph purporting to show the relation between tax rates and government income; income increases as tax rates increase up to an optimum beyond which income declines
learning curve
a graph showing the rate of learning (especially a graph showing the amount recalled as a function of the number of attempts to recall)
a graphical recording of muscle activity
pattern, radiation diagram, radiation pattern
graphical representation (in polar or Cartesian coordinates) of the spatial distribution of radiation from an antenna as a function of angle
a graphical record of speed and distance produced by a tachograph
a graphical record produced by a thermograph
exponential curve
a graph of an exponential function
frequency-response characteristic, frequency-response curve
(electronics) a graph of frequency response with signal amplitude or gain plotted against frequency
EMG, electromyogram
a graphical record of electric currents associated with muscle contractions
Type of:
visual communication
communication that relies on vision

v represent by means of a graph

Type of:
interpret, represent
create an image or likeness of

v plot upon a graph

Type of:
diagram, plot
make a schematic or technical drawing of that shows interactions among variables or how something is constructed

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