# polar coordinate

*noun*

##
Definition of *polar coordinate*

: either of two numbers that locate a point in a plane by its distance from a fixed point on a line and the angle this line makes with a fixed line

1816

## First Known Use of *polar coordinate*

1816

## Seen and Heard

What made you want to look up *polar coordinate*? Please tell us where you read or heard it (including the quote, if possible).