PLUTONIUM
plutonium, Pu, atomic number
(noun) a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear reactors; 13 isotopes are known with the most important being plutonium 239
Source: WordNet® 3.1
Etymology
Noun
plutonium (usually uncountable, plural plutoniums)
The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray radioactive actinide metal that tarnishes when exposed to air.
(countable, historical) Alternative form of ploutonion
Source: Wiktionary
Word of the Day
17 November 2024
MONASTICISM
(noun) asceticism as a form of religious life; usually conducted in a community under a common rule and characterized by celibacy and poverty and obedience
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