from The Century Dictionary.

  • Having the form of a half-circle.
  • Specifically, in anatomy, noting the three canals of the internal ear, whatever their actual shape. They are usually horseshoe-shaped or oval, and sometimes quite irregular. See canal, and cuts under Crocodilia, ear, and periotic.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Having the form of half of a circle.
  • adjective (Anat.) certain canals of the inner ear. See under Ear.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective In the shape of half of a circle or a semicircle.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective curved into a half circle


from Wiktionary, Creative Commons Attribution/Share-Alike License

semi- +‎ circular


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