metamict

World English Dictionary
metamict (ˈmɛtəˌmɪkt) [Click for IPA pronunciation guide]
 
adj
of or denoting the amorphous state of a substance that has lost its crystalline structure as a result of the radioactivity of uranium or thorium within it: metamict minerals
 
[C19: from Danish metamikt, from meta- + Greek miktos mixed]
 
metamicti'zation
 
n
 
metamicti'sation
 
n

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00:10
Metamict is always a great word to know.
So is ninnyhammer. Does it mean:
a fool or simpleton; ninny.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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