pedion

noun

ped·​i·​on

ˈpedēən,

ˈpēd-

plural pedia

-dēə

: a form of crystal having only a single face and belonging to the rare asymmetric class of the triclinic system

Word History

Etymology

New Latin, from Greek, plain, flat surface, from pedon ground; akin to Latin oppido thoroughly, Old Norse fet step, Sanskrit pada step, track, Latin ped-, pes foot

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!