Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An asymmetric triclinic crystal form that only has one face.

from The Century Dictionary and Cyclopedia

  • n. A form, belonging to the asymmetric or pediad class of the triclinic system, consisting of a single face only.

Etymologies

From Ancient Greek πεδίον ("plain, field"). (Wiktionary)

Examples

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