Quartz

Definitions

1. The most abundant mineral on the earth's surface, of chemical composition silicon dioxide, SiO₂. It occurs in a variety of forms, both crystalline and amorphous. Found in every environment.
   countable, uncountable
2. Crystal meth: methamphetamine hydrochloride.
   slang, uncountable

Equivalents

Examples

“The telescope and collimator have⟳ each an object-glass consisting of a single lens of quartz 1½ inch diameter and a focal length of 18½ inches for the sodium yellow light⟳, but not more than 16 inches for the highest rays measured.”

“Subsequently, the old Malay brought him the present⟳ specimen in a state of torpidity, telling him he had found it in a cavity of the quartz reef.”

“My meat eats me. Who waits at the gate? / Mother of quartz, your words writhe into my ear. / Renew the light⟳, lewd whisper⟳.”

CEFR level