Definition of Alidade

1. Noun. Surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments.

Exact synonyms: Alidad
Generic synonyms: Surveying Instrument, Surveyor's Instrument
Group relationships: Theodolite, Transit



2. Noun. Surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles.
Exact synonyms: Alidad
Generic synonyms: Surveying Instrument, Surveyor's Instrument

Definition of Alidade

1. n. The portion of a graduated instrument, as a quadrant or astrolabe, carrying the sights or telescope, and showing the degrees cut off on the arc of the instrument

Definition of Alidade

1. Noun. a sighting device used for measuring angles ¹

2. Noun. a surveying instrument used on a horizontal surface for basic mapping of a limited area (see: [ this illustration]) ¹

¹ Source: wiktionary.com

Definition of Alidade

1. a device used in angular measurement [n -S]

Medical Definition of Alidade

1. The portion of a graduated instrument, as a quadrant or astrolabe, carrying the sights or telescope, and showing the degrees cut off on the arc of the instrument Origin: LL. Alidada, alhidada, fr. Ar. Al-'idada a sort of rule: cf. F. Alidade. Source: Websters Dictionary (01 Mar 1998)

Alidade Pictures

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Lexicographical Neighbors of Alidade

alibies
alibiing
alibility
alibis
alible
alicant
alicants
alickadoo
alickadoos
alicorn
alicycle
alicyclic
alicyclic compound
alicyclic compounds
alidad
alidade (current term)
alidades
alidads
alien
alien abduction
alien absconder
alien nucleic acid
alienabilities
alienability
alienable
alienably
alienage
alienages
alienans
alienate

Literary usage of Alidade

Below you will find example usage of this term as found in modern and/or classical literature:

1. The Principles and Practice of Surveying by Charles Blaney Breed, George Leonard Hosmer (1908)
"With these tables the leveling is done by moving the tripod legs. 173. alidade.* — The instrumental part of the outfit, called the alidade, ..."

2. A Manual of Spherical and Practical Astronomy: Embracing the General by William Chauvenet (1874)
"If the pivot of the alidade is the horizontal axis of a vertical circle, as in the case of some meridian circles, or if, as in other cases, the alidade is ..."

3. A Manual of Spherical and Practical Astronomy: Embracing the General by William Chauvenet (1891)
"ELLIPTICITY OF THE PIVOT OF THE alidade. 33. If the pivot of the alidade is the horizontal axis of a vertical circle, as in the case of ..."

4. Topographic Instructions of the United States Geological Survey by Geological Survey (U.S.) (1913)
"TELESCOPIC alidade. But two adjustments are ordinarily required for the telescopic alidade—for level and for collimation. These should be tested daily. ..."

5. Field Methods in Petroleum Geology by Guy Henry. Cox (1921)
"The importance of the alidade for such work decreases with steeper dips, with larger "structures," with obstructed view, and with lack of stratigraphic ..."

6. A Treatise on Land-surveying: Comprising the Theory Developed from Five by William Mitchell Gillespie (1869)
"(451) The alidade. The ruler has a fiducial or feather edge, which may be divided into inches, ... The ruler and sights together take the name of alidade. ..."

7. Topographic, Trigonometric and Geodetic Surveying: Including Geographic by Herbert Michael Wilson (1912)
"Now swing the far end of the alidade about the positions of first one and then the other of the two known points, and drawing lines along the edge of the ..."

8. A Treatise on Land-surveying: Comprising the Theory Developed from Five by William Mitchell Gillespie (1870)
"(151) The alidade. The ruler has a fiducial or feather edge, which may be divided into inches, ... The ruler and sights together take the name of alidade. ..."

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