plutonium

1. 1.

   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

   SynonymsPuatomic number 94

   Broaderchemical element

   Narrowerplutonium 239

Other forms of plutonium

plural

plutoniums·

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about plutonium

What does plutonium mean?

plutonium means "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".

How many syllables are in plutonium?

plutonium has 4 syllables: plu-to-ni-um. The stress falls on "to". In IPA it is /pluˈtoʊniəm/.

What is another word for plutonium?

Close synonyms include Pu, atomic number 94. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is plutonium a common word?

plutonium is banded "Familiar" — widely understood, used when the subject calls for it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.