Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. One of the portions of space bounded by the three coordinate planes.
  • n. One of the parts of a crystal into which it is divided by the axial planes.

from the GNU version of the Collaborative International Dictionary of English

  • n. One of the portions of space bounded by the three coordinate planes. Specif. (Crystallog.), one of the parts of a crystal into which it is divided by the axial planes.

from The Century Dictionary and Cyclopedia

  • n. A portion of space cut off from the rest by three planes, but extending to infinity.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Latin secare, sectum, to cut.

Examples

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