te·​tar·​to·​he·​dral te-ˌtär-tə-ˈhē-drəl How to pronounce tetartohedral (audio)
of a crystal
: having one fourth the number of planes required by complete symmetry compare hemihedral, holohedral

Word History


Greek tetartos fourth; akin to Greek tettares four — more at four

First Known Use

circa 1858, in the meaning defined above

Time Traveler
The first known use of tetartohedral was circa 1858

Dictionary Entries Near tetartohedral

Cite this Entry

“Tetartohedral.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tetartohedral. Accessed 22 Apr. 2024.

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