Library / English Dictionary

    ROCK CRYSTAL

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    A clear quartz used in making electronic and optical equipmentplay

    Synonyms:

    rock crystal; transparent quartz

    Classified under:

    Nouns denoting substances

    Hypernyms ("rock crystal" is a kind of...):

    quartz (a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities)

    Hyponyms (each of the following is a kind of "rock crystal"):

    rhinestone (an imitation diamond made from rock crystal or glass or paste)

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