Koordinaadi

Koordinaadi is the genitive singular form of koordinaat, meaning a coordinate. It is used to express possession or relation to a single coordinate in mathematical, geographical, and computing contexts. In standard usage, koordinaadi appears in phrases such as koordinaadi väärtus (the value of the coordinate) and koordinaadi asukoht (the location of the coordinate).

Etymology: The noun koordinaat is a loanword, most likely from German Koordinate or French coordonnée, introduced into Estonian in the 19th or early 20th century. The genitive singular koordinaadi follows regular Estonian declension patterns for -aat loanwords.

Usage in mathematics and computing: In mathematics, coordinates describe a point's position in a plane or space; in computing and GIS, coordinates locate elements in a grid or map. The genitive form koordinaadi is used when referring to a single coordinate in a possessive or relational sense, for example: X-koordinaadi väärtus on 5 (the value of the X-coordinate is 5) and Punkti koordinaadi asukoht on (x, y) (the point’s coordinate location).

Distinction: The nominative singular koordinaat means coordinate, the plural koordinaadid means coordinates, and the genitive plural koordinaatide means of coordinates; koordinaadi is specifically the genitive singular form.

See also: koordinaat, koordinaatsüsteem, X-koordinaat, Y-koordinaat.