Zenith–telescope
a telescope mounted to point only at the zenith, used at some observatories for measuring time by the stars.
historical examples
encyclopaedia britannica, 11th edition, volume 11, slice 6 various
noun
an instrument used to determine the lat-tude of stars, similar to the meridian circle but fitted with an extremely sensitive level and a declination micrometer
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- Zenith-tube
a telescope mounted to point only at the zenith, used at some observatories for measuring time by the stars.
- Zenithal
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. historical examples encyclopaedia britannica, 11th edition, volume 17, slice 6 various encyclopaedia britannica, 11th edition, volume 17, slice 6 various encyclopaedia britannica, 11th edition, volume 17, slice […]
- Zenithal-equidistant-projection
azim-th-l equidistant projection.
- Zenithal-projection
noun a type of map projection in which part of the earth’s surface is projected onto a plane tangential to it, either at one of the poles (polar zenithal), at the equator (equatorial zenithal), or between (oblique zenithal)
- Zenker-s-degeneration
zenker’s degeneration