horosphere (English, noun)
expansion: horosphere (plural horospheres)
Senses:
glosses: 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.
Forms:
form: horospheres
tags: plural