Phrase guide

spherical geometry

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

The geometry of the 2-dimensional surface of a sphere;

Definition source: English Wiktionary via Wiktextract

Usage: uncountable, usually

Topics: geometry, mathematics, sciences

Examples

  • The basic concepts of Euclidean geometry of the plane are the point and the (straight) line; in spherical geometry, the corresponding concepts are the point and the great circle.
  • Due to the way the geometry of a sphere's surface differs from that of the plane, spherical geometry has some features of a non-Euclidean geometry and is sometimes described as being one. Historically, however, spherical geometry was not considered a fully fledged (non-Euclidean) geometry capable of resolving the question of whether the parallel postulate is a logical consequence of the rest of Euclid's axioms of plane geometry.
  • 1972, Morris Kline, Mathematical Thought from Ancient to Modern Times: Volume 1, Oxford University Press, 1990, paperback, page 119, Spherical trigonometry presupposes spherical geometry, for example the properties of great circles and spherical triangles, much of which was already known; it had been investigated as soon as astronomy became mathematical, during the time of the later Pythagoreans.
  • 2020, Marshall A. Whittlesey, Spherical Geometry and Its Applications, Taylor & Francis (CRC Press), unnumbered page, It has been at least fifty years since spherical geometry and spherical trigonometry have been a regular part of the high school or undergraduate curriculum.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The geometry of the 2-dimensional surface of a sphere; (countable) a given geometry of the surface of a sphere; a geometry of the surface of a given sphere, regarded as distinct from that of other spheres.

a given geometry of the surface of a sphere; a geometry of the surface of a given sphere, regarded as distinct from that of other spheres.

Definition source: English Wiktionary via Wiktextract

Usage: countable, usually

Topics: geometry, mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

(mathematics) the geometry of figures on the surface of a sphere

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: geometry

History

Etymology

No etymology was provided for this word.

Across languages

Translations

14 source translations are retained for this English entry.

  • Catalan: geometria esfèrica — branch of geometry
  • French: géométrie sphérique — branch of geometry
  • Georgian: სფერული გეომეტრია (speruli geomeṭria) — branch of geometry
  • German: sphärische Geometrie — branch of geometry
  • German: Kugelgeometrie — branch of geometry
  • German: Geometrie auf der Kugel — branch of geometry
  • Hungarian: gömbi geometria — branch of geometry
  • Italian: geometria sferica — branch of geometry
  • Japanese: 球面幾何学 — branch of geometry
  • Polish: geometria sferyczna — branch of geometry
  • Portuguese: geometria esférica — branch of geometry
  • Romanian: geometrie sferică — branch of geometry
  • Spanish: geometría esférica — branch of geometry
  • Tagalog: timbuluging sukgisan — branch of geometry