English

Definition of quartz noun from the Oxford Advanced Learner's Dictionary

 

quartz

 noun
noun
BrE BrE//kwɔːts//
 
; NAmE NAmE//kwɔːrts//
 
[uncountable]
 
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a hard mineral, often in crystal form, that is used to make very accurate clocks and watches The watch runs with a normal quartz movement. Word Origin mid 18th cent.: from German Quarz, from Polish dialect kwardy, corresponding to Czech tvrdý ‘hard’.
See the Oxford Advanced American Dictionary entry: quartz