quartz

Meaning

Noun

• The most abundant mineral on the earth's surface, of chemical composition silicon dioxide, SiO_2</sub>. It occurs in a variety of forms, both crystalline and amorphous. Found in every environment.
• Crystal meth: methamphetamine hydrochloride.

Origin

• From German Quarz, from Middle High German (Central East German) quarz, twarc, from a language [compare Polish twardy ("hard"), Czech tvrdý ("hard"), Russian твёрдый ("hard")], from Old Church Slavonic тврьдъ, from Proto-Slavic *tvьrdъ.