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Lavoisier +‎ -ium, named after the French chemist Antoine Lavoisier


lavoisium (uncountable)

  1. (chemistry, obsolete) A supposed silvery-white, malleable, metallic chemical element, said to have been discovered in pyrites and some other minerals.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.