Americium

//ˌæməˈɹɪsiəm// noun

Definitions

Noun
  1. 1
    The chemical element (symbol Am) with an atomic number of 95. uncountable, usually
  2. 2
    a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms wordnet

Etymology

From Americ(as) + -ium, by analogy with europium.

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