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 luxury piece is from the medium-sized Ballon Bleu de Cartier collection, and it is designed with a traditional steel band and round case with a Swiss quartz movement, according to Forbes.
—
Escher Walcott, People.com, 13 July 2025
This precarious strip of quartz in the sandstone on Chicken Point can’t really be characterized as a trail and is considered one of the most dangerous routes in the world.
—Jean E. Palmieri, Footwear News, 27 June 2025
The morning light shows more details in the carvings and catches the sparkle of quartz.
—Lisa Meyers McClintick, USA Today, 21 June 2025
This Florida Keys destination is known for its soft sand, which consists mainly of pure quartz that originated from the Appalachian Mountains.
—Opheli Garcia Lawler, Travel + Leisure, 10 June 2025
See All Example Sentences for quartz
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Escher Walcott, People.com, 13 July 2025
This precarious strip of quartz in the sandstone on Chicken Point can’t really be characterized as a trail and is considered one of the most dangerous routes in the world.
—Jean E. Palmieri, Footwear News, 27 June 2025
The morning light shows more details in the carvings and catches the sparkle of quartz.
—Lisa Meyers McClintick, USA Today, 21 June 2025
This Florida Keys destination is known for its soft sand, which consists mainly of pure quartz that originated from the Appalachian Mountains.
—Opheli Garcia Lawler, Travel + Leisure, 10 June 2025
See All Example Sentences for quartz
Cite this Entry
“Quartz.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/quartz. Accessed 25 Jul. 2025.
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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