coordinate

koh-OR-dih-nate /koʊˈɔːrdɪnət/
nounverbB2SATACTGMAT
TechnicalGeneral

Each of a group of numbers used to indicate the position of a point, line, or plane.

In navigation, it usually refers to the intersection of latitude and longitude.

The story behind the word. From the Latin 'ordinare', meaning to put in order. The 'co-' prefix implies bringing things together into a shared system of order.

Word relationships

  • position: Position is a general location; a coordinate is the specific numerical value of that location.

Commonly confused with

  • ordinate: In a 2D graph, the ordinate is specifically the y-value, while a coordinate is the pair (x,y).

Word family

  • coordination (noun): The organization of the different elements of a complex body or activity.

Collocations

  • geographic coordinates
  • grid coordinate
  • coordinate system

Example sentences

  • "The system of coordinates allows us to pinpoint any location on the globe." Mathematics
  • "The pilot was given the exact coordinate for the emergency landing." Rescue mission

Memory hook

Co- (together) + Ordinate (order). Putting numbers together to find an order. Numbers in order.

When not to use

As a verb, it means to organize; as a noun in this context, it is strictly mathematical.

Fun facts

  • The Cartesian coordinate system is named after René Descartes, who supposedly came up with it while watching a fly on his ceiling.

Related words

latitude, longitude

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