zenithal

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

adjective

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

Word History and Origins

Origin of zenithal¹

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

Example Sentences

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

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

From Project Gutenberg

It is obvious that all perspective projections are zenithal.

From Project Gutenberg