zenithal

zenithal
/zee"neuh theuhl/ or, esp. Brit., /zen"euh-/, adj.
1. of or pertaining 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.
[1855-60; ZENITH + -AL1]

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Universalium. 2010.

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  • Zenithal — e nith*al, a. Of or pertaining to the zenith. The deep zenithal blue. Tyndall. [1913 Webster] …   The Collaborative International Dictionary of English

  • zénithal — zénithal, ale (zé ni tal, ta l ) adj. Qui appartient au zénith. Les points zénithaux. La distance zénithale d un point en un lieu est la distance angulaire de ce point et du zénith de ce lieu …   Dictionnaire de la Langue Française d'Émile Littré

  • zenithal — adjective Date: 1860 1. of, relating to, or located at or near the zenith 2. showing correct directions from the center < a zenithal map > …   New Collegiate Dictionary

  • zenithal — zenith ► NOUN 1) the point in the sky directly overhead. 2) the highest point in the sky reached by a given celestial object. 3) the time at which something is most powerful or successful. DERIVATIVES zenithal adjective. ORIGIN from an Arabic… …   English terms dictionary

  • zenithal — adj. of or relating to a zenith. Phrases and idioms: zenithal projection a projection of part of a globe on to a plane tangential to the centre of the part, showing the correct directions of all points from the centre …   Useful english dictionary

  • zenithal projection — noun (geography) A type of map projection in which the plane of projection is tangential to the sphere • • • Main Entry: ↑zenith * * * zenithal projection, map projection having all points in true compass direction from the center of the map;… …   Useful english dictionary

  • Zenithal Hourly Rate — Die Zenithal Hourly Rate (ZHR) eines Meteorstroms ist die Anzahl der Meteore, die ein Beobachter in einer Stunde unter einem klaren, dunklen Himmel (Grenzgröße 6,5 Größenklassen) sieht, wenn der Radiant des Stroms genau im Zenit steht. Daher ist… …   Deutsch Wikipedia

  • Zenithal Hourly Rate — In astronomy, the Zenithal Hourly Rate (ZHR) of a meteor shower is the number of meteors an observer would see in one hour under a clear, dark sky (limiting apparent magnitude of 6.5) and if the radiant of the shower were in the zenith. The rate… …   Wikipedia

  • zenithal projection — A projection of the graticule of the reduced earth onto a plane placed tangential to the reduced earth at a point. Depending on whether the point of tangency is the pole or the equator or some other point, they are referred to as a polar,… …   Aviation dictionary

  • zenithal refraction — zenitinė refrakcija statusas T sritis fizika atitikmenys: angl. zenithal refraction vok. Zenitrefraktion, f rus. зенитная рефракция, f pranc. réfraction zénithale, f …   Fizikos terminų žodynas

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