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from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A semicircle.
  • n. An instrument for measuring angles in surveying etc., resembling a protractor with an alidade, sights, and compass.

from the GNU version of the Collaborative International Dictionary of English

  • n. An instrument for measuring angles, in surveying, etc. It resembles a protractor, but has an alidade, sights, and a compass.

from The Century Dictionary and Cyclopedia

  • n. A simple instrument for measuring and indicating angles, sometimes used as a substitute for the theodolite.


demi- +‎ circle. Compare French demi-cercle. (Wiktionary)


Sorry, no example sentences found.


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