Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Quartz" Definition
noun
A very hard mineral composed of silica, SiO2, found worldwide in many different types of rocks, including sandstone and granite. Varieties of quartz include agate, chalcedony, chert, flint, opal, and rock crystal.
Source: American Heritage Dictionary
A mineral consisting of silicon dioxide occurring in colorless and transparent or colored hexagonal crystals or in crystalline masses.
Source: Merriam-Webster
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 .
Source: Merriam-Webster