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Webster 1913 Edition

Noun.

[Named after

Sir Humphry

Davy

, the English chemist.]

(Chem.)

A rare metallic element found in platinum ore. It is a white malleable substance. Symbol Da. Atomic weight 154.

davyum ‎(uncountable)

A supposed chemical element discovered in 1877, later found to be a mixture of iridium and rhodium.