geometry
UK /d͡ʒiːˈɒm.ɪ.tɹi/ · US /d͡ʒiˈɑ.mə.tɹi/ noun
Forms geometries
- noun (mathematics, uncountable) The branch of mathematics dealing with spatial relationships.
- noun (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.”
- noun (countable) The observed or specified spatial attributes of an object, etc.
- noun (algebraic geometry, countable) A mathematical object comprising representations of a space and of its spatial relationships.
Etymology
From Middle English gemetry, geometrie, from Old French geometrie (modern French géométrie), from Latin geōmetria, from Ancient Greek γεωμετρία (geōmetría, “geometry, land-survey”), from γεωμέτρης (geōmétrēs, “geometer, land measurer”), from γῆ (gê, “earth, land, country”) + -μετρία (-metría, “measurement”), from μέτρον (métron, “a measure”). By surface analysis, geometer + -y or geo- + -metry. Doublet of gematria. Displaced native Old English eorþcræft, literally, "earth-craft".
Webster’s 1913
- That branch of mathematics which investigates the relations, properties, and measurement of solids, surfaces, lines, and angles; the science which treats of the properties and relations of magnitudes; the science of the relations of space.
- A treatise on this science. Analytical, or Coördinate, geometry, that branch of mathematical analysis which has for its object the analytical investigation of the relations and properties of geometrical magnitudes.
Etymology [F. géométrie, L. geometria, fr. Gr. Geometer.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “geometry”, CC BY-SA 4.0. Details