Etymology

horosphere

H4O1R1O1S1P3H4E1R1E1

Today it means: An n-1-dimensional hyperplane in hyperbolic n-dimensional space: it is (in the Poincaré disk) Euclidean-tangent at infinity to the boundary sphere or (in the upper-half-space model) Euclidean-parallel to the boundary hyperplane. Full definition →

Ancient Greek ὅρος
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Ancient Greek · derived fromὅρος“boundary”
  2. English todayhorosphere

A modern scientific coinage, probably from a Latinized spelling of Ancient Greek ὅρος (hóros, “boundary”) (not to be confused with ὧρος (hôros, “year”), which gave rise to many time-related terms) + -sphere

Words from the same roots

Ancient Greekὅρος all →

horopterhoros

Etymology from Wiktionary, CC BY-SA 4.0.