1) Astronomical instrument 2) Circle division 3) Circle eighth 4) Constellation 5) Constellation, Octans 6) Eighth of a circle 7) Eighth part of a circle 8) Geometric shape 9) Many a pizza slice 10) Measuring device 11) Measuring instrument 12) Measuring system 13) Navigation instrument 14) Navigational instrument
Found on
https://www.crosswordclues.com/clue/octant
[instrument] The octant, also called reflecting quadrant, is a measuring instrument used primarily in navigation. It is a type of reflecting instrument. ==Etymology== The name octant derives from the Latin octans meaning eighth part of a circle, because the instrument`s arc is one eighth of a circle. Reflecting quadrant derives from the ins...
Found on
http://en.wikipedia.org/wiki/Octant_(instrument)
[plane geometry] Traditionally wind direction is given as one of the 8 octants (N, NE, E, SE, S, SW, W, NW) because that is more precise than merely giving one of the 4 quadrants, and the wind vane typically does not have enough accuracy to bother with more precise indication. ...
Found on
http://en.wikipedia.org/wiki/Octant_(plane_geometry)
[solid geometry] An octant in solid geometry is one of the eight divisions of a Euclidean three-dimensional coordinate system defined by the signs of the coordinates. It is similar to the two-dimensional quadrant and the one-dimensional ray. The generalization of an octant is called orthant. ==Naming and Numbering== A convention for naming ...
Found on
http://en.wikipedia.org/wiki/Octant_(solid_geometry)
• (n.) The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, or opposition, and quadrature, or distant from another body 45 degrees. • (n.) An instrument for measuring angles (generally called a quadrant), having an arc which measures up to 9O
Found on
http://thinkexist.com/dictionary/meaning/octant/
Navigation instrument measuring solar and stellar heights. Photos.
Found on
http://www.abc.se/~pa/uwa/glossary.htm
(from the article `navigation`) ...was made in 1594 by the English navigator John Davis. His instrument, called the backstaff because it was used with the observer`s back to the ... The needs of reliable navigation created a demand for better instruments. The quadrant was improved by conversion to the octant, using mirrors to ... [2 ...
Found on
http://www.britannica.com/eb/a-z/o/5
Any one of the 8 portions of space determined by the 3 coordinate planes.
Found on
http://www.daviddarling.info/encyclopedia/O/octant.html
1. <geometry> The eighth part of a circle; an arc of 45 degrees. ... 2. <astronomy> The position or aspect of a heavenly body, as the moon or a planet, when half way between conjunction, or opposition, and quadrature, or distant from another body 45 degrees. ... 3. An instrument for measuring angles (generally called a quadrant), having...
Found on
http://www.encyclo.co.uk/local/20973
Navigational instrument which measures the angle of the sun above the horizon. It was invented by John Hadley in 1731, but was superseded by the more accurate sextant in the late 18thC.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Oc'tant noun [ Latin
octans ,
- antis . from
octo eight. See
Octave .]
1. (Geom.) The eighth part of a circle; an arc of 45 degrees.
2. (Astron. & Astrol.) The position or aspect of a heavenly body, as the moon or a planet, when half way betwe...
Found on
http://www.encyclo.co.uk/webster/O/9
[
n] - a measuring instrument for measuring angles to a celestial body
Found on
http://www.webdictionary.co.uk/definition.php?query=octant
Any one of the 8 portions of space determined by the 3 coordinate planes. See also: Coordinates.
Found on
https://www.encyclo.co.uk/local/20687
noun a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.
