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Vinony

einsteinium

noun

  1. chemical element with the atomic number of 99
L18294 on Wikidata ↗

Wiktionary

Pronunciation: /aɪnˈstaɪni.əm/

noun

Etymology: From Einstein + -ium. Named after Albert Einstein.

  1. A transuranic chemical element (symbol Es) with atomic number 99: a soft, silvery, paramagnetic metal.

    “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.”