# Argand diagram

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noun Mathematics.
a Cartesian coordinate system consisting of two perpendicular axes for graphing complex numbers, the real part of a number being plotted along the horizontal axis and the imaginary part along the vertical axis.
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## Origin ofArgand diagram

1905–10; named after Jean-Robert Argand (1768–1822), Swiss mathematician

## Words nearby Argand diagram

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

## British Dictionary definitions for Argand diagram

Argand diagram
/ (ˈɑːɡænd) /

noun
maths a diagram in which complex numbers are represented by the points in the plane the coordinates of which are respectively the real and imaginary parts of the number, so that the number x + i y is represented by the point (x, y), or by the corresponding vector < x, y >. If the polar coordinates of (x, y) are (r, θ), r is the modulus and θ the argument of x + i ySee also amplitude (def. 5)

## Word Origin for Argand diagram

C19: named after Jean-Robert Argand (1768–1822), French mathematician
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
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