1
: a mineral consisting of silicon dioxide occurring in colorless and transparent or colored hexagonal crystals or in crystalline masses
2
: a quartz crystal that when placed in an electric field oscillates at a constant frequency and is used to control devices which require precise regulation
a quartz watch
Examples of quartz in a Sentence
Recent Examples on the Web
The hardstone animals, none of which measure more than three inches in height or length, include a hen with gold feet, an agate owl, a whimsical quartz pig and an upside-down frog performing a handstand while smiling.
—
Julia Binswanger, Smithsonian Magazine, 29 May 2024
From lapis lazuli to rose quartz, here are the best crystals for each zodiac sign, according to an astrologer
Ever wonder which crystal aligns best with your zodiac sign?
—Valerie Mesa, Peoplemag, 27 May 2024
The countertops are Calacatta Valentin quartz, which gives a marble look.
—Mary Carole McCauley, Baltimore Sun, 14 Mar. 2024
Other crystals: Amplifier crystals (such as clear quartz and selenite) can charge smaller stones placed upon them.
—Valerie Mesa, Peoplemag, 14 May 2024
See all Example Sentences for quartz 
Julia Binswanger, Smithsonian Magazine, 29 May 2024
From lapis lazuli to rose quartz, here are the best crystals for each zodiac sign, according to an astrologer
Ever wonder which crystal aligns best with your zodiac sign?
—Valerie Mesa, Peoplemag, 27 May 2024
The countertops are Calacatta Valentin quartz, which gives a marble look.
—Mary Carole McCauley, Baltimore Sun, 14 Mar. 2024
Other crystals: Amplifier crystals (such as clear quartz and selenite) can charge smaller stones placed upon them.
—Valerie Mesa, Peoplemag, 14 May 2024
See all Example Sentences for quartz
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'quartz.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near quartz
Cite this Entry
“Quartz.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quartz. Accessed 6 Jun. 2024.
Copy CitationKids Definition
quartz
noun
: a common mineral consisting of silicon dioxide that is often found in the form of colorless transparent crystals but is sometimes (as in amethysts, agates, and jaspers) brightly colored
Medical Definition
quartz
noun
: a mineral SiO2 consisting of a silica that occurs in colorless and transparent or colored hexagonal crystals and also in crystalline masses
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