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An eighth of a circle
Answer for the clue "An eighth of a circle ", 6 letters:
octant
Alternative clues for the word octant
Word definitions for octant in dictionaries
Wikipedia
Word definitions in Wikipedia
In plane geometry , octant is a circular sector obtained by division of the full circle into 8 equal parts, hence the name. It is a sector with the central angle of 45°.
Wiktionary
Word definitions in Wiktionary
n. 1 The eighth part of a circle; an arc of 45 degrees. 2 (context geometry English): The eighth part of a disc; a sector of 45 degrees; half a quadrant. 3 (context nautical English): An instrument for measuring angles, particularly of elevation.
Usage examples of octant.
Torve the Trog was eating from a heaping plate of kumquats, Morovian sugar-grass, and ruvelo, a red root-paste common in this octant as a staple starch.
Sailors could tell their latitude by the angle of the sun off the horizon, had been doing it for a thousand years with cross-staffs, astrolabes, octants and sextants.
There were no instruments in the taxi, no built-in octants, no patent logs, no computers.