Look up: astrolabe

1. 
   Astrolabe
   Instrument used for celestial navigation. A large collection (more than 10) is displayed at the Museu de Marinha in Lisbon. Photo of astrolabe from the Batavia, courtesy Western Australia Maritime Museum. Illustration of usage.
   Found on http://www.abc.se/~pa/uwa/glossary.htm
   
   
2. 
   astrolabe
   [n] - an early form of sextant
   Found on http://www.webdictionary.co.uk/definitio
   
   
3. 
   Astrolabe
   An ancient instrument used for measuring the altitudes of celestial objects.
   Found on http://www.delscope.demon.co.uk/astronom
   
   
4. 
   Astrolabe
   An astrolabe is an instrument that was used to determine the altitude of objects in the sky (like the sun or stars). It was first used around 200 B.C. by astronomers in Greece. The astrolabe was replaced by the sextant. See also: Altitude.
   Found on http://www.diracdelta.co.uk/science/sour
   
   
5. 
   astrolabe
   an instrument used for taking astronomical sights Category: The cosmos
   Found on http://www.mijnwoordenboek.nl/definition
   
   
6. 
   astrolabe
   A circular instrument with a moveable arm for calculating the altitude of the sun and plotting the positions of the stars, for astronomical and navigational purposes. Astrolabes were used from the 2nd century, and although obsolete in Europe by the 18thC, forgeries continued to be made in the Middle East.
   Found on http://www.antique-crafts.co.uk/glossary
   
   
7. 
   Astrolabe
   As'tro·labe (ăs'tro*lāb) noun [ Middle English astrolabie , astrilabe , Old French astrelabe , French astrolabe , Late Latin astrolabium , from Greek 'astrola`bon ; 'a`stron star + ..., ..., to take.] 1. (Astron.) An instrument for observing or showing the positions of the stars. It is now disused. » Among t ...
   Found on http://www.encyclo.co.uk/webster/A/137
   
   
8. 
   astrolabe
   1. <astronomy> An instrument for observing or showing the positions of the stars. It is now disused. ... Among the ancients, it was essentially the armillary sphere. A graduated circle with sights, for taking altitudes at sea, was called an astrolabe in the 18th century. It is now superseded by the quadrant and sextant. ... 2. A stereographic p ...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
9. 
   astrolabe
   noun an early form of sextant
   Found on http://wordnet.princeton.edu/perl/webwn?
   
   
10. 
    Astrolabe
    The `astrolabe` is a historical astronomical instrument used by classical astronomers, navigators, and astrologers. Its many uses included locating and predicting the positions of the Sun, Moon, planets and stars; determining local time given local longitude and vice-versa; surveying; and triangulation. In the Islamic world, they are and were used primarily for astronomical studies, though astrology was often involved there as well. Astrologers o...
    Found on http://en.wikipedia.org/wiki/Astrolabe
    
    
11. 
    Astrolabe
    • (n.) A stereographic projection of the sphere on the plane of a great circle, as the equator, or a meridian; a planisphere. • (n.) An instrument for observing or showing the positions of the stars. It is now disused.
    Found on http://thinkexist.com/dictionary/meaning
    
    
12. 
    Astrolabe
    (from the article `La Pérouse, Jean-François de Galaup, Count de`) Commanding the ship La Boussole, which was accompanied by the Astrolabe, La Pérouse sailed from France on Aug. 1, 1785. After rounding Cape Horn, one ...
    Found on http://www.britannica.com/eb/a-z/a/116
    
    
13. 
    astrolabe
    any of a type of early scientific instrument used for reckoning time and for observational purposes. One widely employed variety, the planispheric ... [6 related articles]
    Found on http://www.britannica.com/eb/a-z/a/116
    
    
14. 
    astrolabe
    An Arabic and medieval European sighting instrument on an altazimuth mounting, used to determine the elevation above the horizon of celestial objects. It comprises two or more flat, metal, calibrated disks, attached so that both or all can rotate independently. For early navigators and astronomers i...
    Found on http://www.daviddarling.info/encyclopedi
    
    
15. 
    astrolabe
    astrolabe (ăs'trulāb) , instrument probably used originally for measuring the altitudes of heavenly bodies and for determining their positions and movements. Although its origin is ancient and obscure, its invention is frequently ascribed either to Hipparchus or to Apollonius of Perg...
    Found on http://www.infoplease.com/ce6/sci/A08051