amphibolite
noun
am·phib·o·lite am-ˈfi-bə-ˌlīt 
: a usually metamorphic rock consisting essentially of amphibole
Example Sentences
Recent Examples on the Web The only way to connect the two main buildings was by burrowing down, and the first stage of construction involved more than a year of excavation, during which 9,000 tons of amphibolite, a metamorphic rock, were relocated. 
Natalia Rachlin, WSJ, 12 Dec. 2018
Natalia Rachlin, WSJ, 12 Dec. 2018 Word History
Etymology
borrowed from French, from amphibole amphibole + -ite -ite entry 1
First Known Use
1826, in the meaning defined above
- sheriff
- pharmacognosy
- pharmacokinetic
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