Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

quartz

play
noun \ˈkwȯrts\

Simple Definition of quartz

  • : a mineral that is often found in the form of a hard crystal and that is used especially to make clocks and watches

Source: Merriam-Webster's Learner's Dictionary

Full Definition of quartz

  1. 1 :  a mineral consisting of silicon dioxide occurring in colorless and transparent or colored hexagonal crystals or in crystalline masses

  2. 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>

quartzose play \ˈkwȯrt-ˌsōs\ adjective

Origin of quartz

German Quarz


First Known Use: circa 1631


QUARTZ Defined for Kids

quartz

play
noun \ˈkwȯrts\

Definition of quartz for Students

  1. :  a common mineral often found in the form of colorless transparent crystals but sometimes (as in amethysts, agates, and jaspers) brightly colored




Medical Dictionary

quartz

play
noun \ˈkwȯ(ə)rts\

Medical Definition of quartz

  1. :  a mineral SiO2 consisting of a silica that occurs in colorless and transparent or colored hexagonal crystals and also in crystalline masses




Learn More about quartz


Seen and Heard

What made you want to look up quartz? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

immature or lacking adult sophistication

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

prompt oily angry maudlin
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ