Look up: zenith

1. 
   Zenith
   The point on the celestial sphere directly above the observer. Opposite the nadir.
   Found on http://www2.jpl.nasa.gov/basics/bsfgloss
   
   
2. 
   Zenith
   The zenith is the highest point in the heavens above an observers head. Opposite to the nadir.
   Found on http://www.encyclo.co.uk/nol.php
   
   
3. 
   zenith
   [n] - the point above the observer that is directly opposite the nadir on the imaginary sphere against which celestial bodies appear to be projected
   Found on http://www.webdictionary.co.uk/definitio
   
   
4. 
   Zenith
   see midheaven.
   Found on http://www.isleofavalon.co.uk/Glastonbur
   
   
5. 
   Zenith
   The point on the celestial sphere that lies directly overhead an observer, exactly 90 degrees away from every part of the observer's horizon.
   Found on http://www.delscope.demon.co.uk/astronom
   
   
6. 
   Zenith
   The zenith is the point in the sky directly above an observer's head. This term is often used in astronomy
   Found on http://www.users.zetnet.co.uk/computing/
   
   
7. 
   Zenith
   Parameter of tape head alignment relating to whether or not the head is perpendicular to the tape path, and aligned so as to be in the same plane.
   Found on http://www.traditionalmusic.co.uk/music%
   
   
8. 
   Zenith
   The point on the celestial sphere directly above an observer, or the highest point in the sky reached by a celestial body.
   Found on http://www.exeterastro.co.uk/glossary.ht
   
   
9. 
   Zenith
   Point in the Sky that is directly overhead. The direction to the zenith is perpendicular to the astronomical horizon. The point 180 degrees from the zenith is called the nadir. See also: Nadir, Zenithal.
   Found on http://www.diracdelta.co.uk/science/sour
   
   
10. 
    zenith
    the point in the heavens directly above the observer 99999INTERNATIONAL DE MONACO,1951 Category: General
    Found on http://www.mijnwoordenboek.nl/definition
    
    
11. 
    Zenith
    Ze'nith noun [ Middle English senyth , Old French cenith , French zénith , Spanish zenit , cenit , abbrev. from Arabic samt-urras way of the head, vertical place; samt way, path + al the + ras head. Confer Azimuth .] 1. That point in the visible celestial hemisphere which is vertical to the spectator; the point of the ...
    Found on http://www.encyclo.co.uk/webster/Z/2
    
    
12. 
    zenith
    1. That point in the visible celestial hemisphere which is vertical to the spectator; the point of the heavens directly overhead; opposed to nadir. 'From morn To noon he fell, from noon to dewy eve, A summer's day; and with the setting sun Dropped from the zenith, like a falling star.' (Milton) ... 2. Hence, figuratively, the point of culmination; t ...
    Found on http://www.mondofacto.com/facts/dictiona
    
    
13. 
    Zenith
    • (n.) hence, figuratively, the point of culmination; the greatest height; the height of success or prosperity. • (n.) That point in the visible celestial hemisphere which is vertical to the spectator; the point of the heavens directly overhead; -- opposed to nadir.
    Found on http://thinkexist.com/dictionary/meaning
    
    
14. 
    zenith
    point on the celestial sphere directly above an observer on the Earth. The point 180° opposite the zenith, directly underfoot, is the nadir. ...
    Found on http://www.britannica.com/eb/a-z/z/5
    
    
15. 
    ZENITH
    The point which is elevated 90 degrees from all points on a given observer's astronomical horizon. The point on any given observer's celestial sphere that lies directly above him. The opposite of nadir.
    Found on http://www.weather.com/glossary/z.html
    
    
16. 
    zenith
    The point on the celestial sphere directly above an observer; it is the the opposite of nadir. The zenith angle is the angle between the overhead point for an observer and an object such as the Sun. The solar zenith angle is zero if the Sun is directly overhead and is 90° when the Sun is on the ...
    Found on http://www.daviddarling.info/encyclopedi
    
    
17. 
    zenith
    zenith, in astronomy, the point in the sky directly overhead; more precisely, it is the point at which the celestial sphere is intersected by an upward extension of a plumb line from the observer's location. Its position in the sky thus depends on the direction of the earth's gravitational field at ...
    Found on http://www.infoplease.com/ce6/sci/A08533