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kentbrooksite

Noun CEFR C1

Definitions

A trigonal-ditrigonal pyramidal yellowish brown mineral containing calcium, fluorine, hydrogen, lanthanum, cerium, praseodymium, neodymium, samarium, manganese, niobium, oxygen, silicon, sodium, and zirconium.

uncountable

CEFR level

C1
Advanced
This word is part of the CEFR C1 vocabulary — advanced level.
See all C1 English words →

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