Definition of "geometry" in English

noun

1. (mathematics, uncountable) The branch of mathematics dealing with spatial relationships.

2. (mathematics, often qualified in combination, countable) 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.

   • 1975 [Addison-Wesley], Eugene F. Krause, Taxicab Geometry, 1986, Dover, page 64, Entire new geometries are also suggested by real-world cities.

3. (countable) The observed or specified spatial attributes of an object, etc.

4. (algebraic geometry, countable) A mathematical object comprising representations of a space and of its spatial relationships.