Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. having axes at right angles
  • adj. being corrected for the curvature of the Earth

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having the axes at right angles to one another; -- said of crystals or crystalline forms.

from The Century Dictionary and Cyclopedia

  • In crystallography, pertaining to the three systems in which the axes are at right angles with each other. See crystallography.

Etymologies

ortho- + -metric (Wiktionary)

Examples

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