theodolite

[thee-od-l-ahyt]
noun
1.
Surveying. a precision instrument having a telescopic sight for establishing horizontal and sometimes vertical angles. Compare transit ( def 6 ).

Origin:
1565–75; < Neo-Latin theodolitus < ?

theodolitic [thee-od-l-it-ik] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To theodolite
Collins
World English Dictionary
theodolite (θɪˈɒdəˌlaɪt)
 
n
Also called (in the US and Canada): transit a surveying instrument for measuring horizontal and vertical angles, consisting of a small tripod-mounted telescope that is free to move in both the horizontal and vertical planes
 
[C16: from New Latin theodolitus, of uncertain origin]
 
theodolitic
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
theodolite   (thē-ŏd'l-īt')  Pronunciation Key 
An optical instrument used to measure angles in surveying, meteorology, and navigation. In meteorology, it is used to track the motion of a weather balloon by measuring its elevation and azimuth angle. The earliest theodolite consisted of a small mounted telescope that rotated horizontally and vertically; modern versions are sophisticated computerized devices, capable of tracking weather balloons, airplanes, and other moving objects, at distances of up to 20,000 m (65,600 ft).
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Encyclopedia Britannica
Encyclopedia

theodolite

basic surveying instrument of unknown origin but going back to the 16th-century English mathematician Leonard Digges; it is used to measure horizontal and vertical angles. In its modern form it consists of a telescope mounted to swivel both horizontally and vertically. Leveling is accomplished with the aid of a spirit level; crosshairs in the telescope permit accurate alignment with the object sighted. After the telescope is adjusted precisely, the two accompanying scales, vertical and horizontal, are read

Learn more about theodolite with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Example sentences
The methods available for tracking balloons in upper wind measurement can be divided into optical-theodolite and radio methods.
There was good agreement between the theodolite-derived surface measurements and the holography-derived surface.
It is a relatively small, yet rugged theodolite that could take observations
  both during the day and at night.
Dolphin movement patterns: information from radio and theodolite tracking
  studies pp.
Images for theodolite
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature