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gadabout
gadarene
gadfly
gadget
gadgeteer
gadgetry
gadid
Gadite
gadolinite
gadolinium
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gadolinite

gad·o·lin·ite [ gádd'lə nt ]


noun 
Definition:
 
black or brown mineral: a black or brown silicate mineral containing beryllium, iron, and yttrium. Source: pegmatites.

[Early 19th century. After Johan Gadolin (1760-1852), Finnish mineralogist]
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