# Definition: Geometry

## Etymology

From Old French *gÃ©omÃ©trie*, from Latin *geÅmetria*, from Ancient Greek *Î³ÎµÏ‰Î¼ÎµÏ„ÏÎ¯Î±* or *geÅmetrÃa* (geometry, land-survey), from *Î³ÎµÏ‰Î¼ÎÏ„ÏÎ·Ï‚* or *geÅmÃ©trÄ“s* (land measurer), from *Î³á¿†* or *gÃª* (earth, land, country) + *-Î¼ÎµÏ„ÏÎ¯Î±* or *-metrÃa* (measurement), from *Î¼ÎÏ„ÏÎ¿Î½* or *mÃ©tron* (a measure).

## Noun

**geometry** (countable and uncountable, plural **geometries**)

- (mathematics) The branch of mathematics dealing with spatial relationships.
*I learned about squares and other polygons in***geometry**class.

- (mathematics, often qualified in combination) A mathematical system that deals with spatial relationships and that is built on a particular set of axioms; a subbranch of geometry which deals with such a system or systems.
*After reading various popular mathematics books, I became interested in four-dimensional***geometry**and other theoretical subjects.

- (countable) The observed or specified spatial attributes of an object, etc.
- (algebraic geometry) A mathematical object comprising representations of a space and of its spatial relationships.

### Derived terms

- algebraic geometry
- anabelian geometry
- analytical geometry
- arithmetic geometry
- combinatorial geometry
- complex geometry
- computational geometry
- conformal geometry
- contact geometry
- descriptive geometry
- differential geometry
- elementary geometry
- elliptic geometry
- Euclidean geometry
- finite geometry
- fractal geometry
- hyperbolic geometry
- hypergeometry
- imaginary geometry
- Kerr geometry
- Klein geometry
- plane geometry
- spherical geometry
- variable geometry

### Related terms

- geometer
- geometric
- geometrical

## Credits

*New World Encyclopedia* writers and editors copied and adjusted this *Wiktionary* entry in accordance with *NWE* standards. This article abides by terms of the Creative Commons CC-by-sa 3.0 License (CC-by-sa), which may be used and disseminated with proper attribution. Credit for this article is due to both *New World Encyclopedia* contributors and the selfless volunteer contributors of the Wikimedia Foundation. To cite this article click here for a list acceptable citing formats.The history of earlier contributions at Wiktionary is accessible to researchers here:

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