View synonyms for zenithal

zenithal

[ zee-nuh-thuhlor, especially British, zen-uh- ]

Phonetic (Standard)IPA

adjective

of or relating to the zenith; situated at or near the zenith.
(of a map) drawn to indicate the actual direction of any point from the center point.

First recorded in 1855–60; zenith + -al ¹

All round the horizon is built a black cloud-wall, but the zenithal heaven is clear.

It is clear that perspective and zenithal projections are particular groups of conical projections.

This gives either the group of conical projections with rectified meridians, or as a particular case the equidistant zenithal.

Of the above 25 projections, 23 are conical or quasi-conical, if zenithal and perspective projections be included.

It is obvious that all perspective projections are zenithal.

April 18, 2024petrichor

[pet-ri-kawr]

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