# 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.

## QUIZZES

#### QUIZ YOURSELF ON AFFECT VS. EFFECT!

In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”

Question 1 of 7

The rainy weather could not ________ my elated spirits on my graduation day.

Compare imaginary axis, real axis.

## Origin of Argand diagram

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

## Words nearby Argand diagram

argal, argali, Argall, argan, Argand burner, Argand diagram, Argand lamp, argan oil, Argas, argasid, Argasidae

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## Example sentences from the Web for Argand diagram

## 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

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