Bertrandite

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A basic beryllium sorosilicate that is an ore of beryllium. countable, uncountable

Etymology

From Bertrand + -ite, named after French mineralogist Émile Bertrand (1844-1909) in 1883.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.