Definitions
a radioactive transuranic element produced by bombarding plutonium with neutrons
Word origin
From Einstein + -ium. Named after Albert Einstein.
Used in a sentence
“Einsteinium, the 99th element of the periodic table, was discovered in the fallout of the first hydrogen bomb, detonated by the United States in the Marshall Islands on November 1, 1952.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Element number 99”11 letters
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