plutonium

After Pluto (dwarf planet) +‎ -ium.

• enPR: plo͞otō'nēəm, IPA^(key): /pluːˈtoʊniəm/

• Audio (General American):

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• Audio (US):

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• Rhymes: -əʊniəm

plutonium (usually uncountable, plural plutoniums)

1. The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray fissile radioactive actinide metal that tarnishes when exposed to air.
   • 2023 December 27, Ben Jones, “Inside Sellafield... by rail”, in RAIL, number 999, page 20:

     For 75 years, it has fulfilled a wide range of roles: producing weapons-grade plutonium for early atomic weapons in the aftermath of the Second World War; the world's first commercial nuclear power station supplying electricity to the National Grid; reprocessing and storage of nuclear fuel; and the processing of lower grades of radioactive waste for off-site storage.

2. (countable, historical) Alternative form of ploutonion.

plutonium (uncountable)

1. plutonium

• IPA^(key): [ˈplutoːnɪjum]
• IPA^(key): [ˈplutonɪjum]

plutonium n

1. plutonium

From New Latin Pluto +‎ -ium.

plutonium n (singular definite plutoniummet or plutoniumet, not used in plural form)

1. plutonium

• “plutonium” in Den Danske Ordbog

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plutonium n (uncountable)

1. plutonium

Internationalism (see English plutonium).

• IPA^(key): /ˈplutonium/, [ˈplut̪o̞ˌnium]
• Rhymes: -ium
• Syllabification^(key): plu‧to‧ni‧um
• Hyphenation^(key): plu‧to‧ni‧um

plutonium

1. plutonium

• “plutonium”, in Kielitoimiston sanakirja [Dictionary of Contemporary Finnish]‎^[1] (in Finnish) (online dictionary, continuously updated), Kotimaisten kielten keskuksen verkkojulkaisuja 35, Helsinki: Kotimaisten kielten tutkimuskeskus (Institute for the Languages of Finland), 2004–, retrieved 3 July 2023

• IPA^(key): /ply.tɔ.njɔm/

• Audio:

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plutonium m (uncountable)

1. plutonium

• “plutonium”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

• (Classical Latin) IPA^(key): [pɫuːˈtoː.ni.ũː]
• (modern Italianate Ecclesiastical) IPA^(key): [pluˈt̪ɔː.ni.um]

plūtōnium n (genitive plūtōniī); second declension

1. plutonium

Second-declension noun (neuter).

From English plutonium, from Pluto.

• IPA^(key): [plutoniom], [plutoniəm]
• Rhymes: -iom, -jom, -om

plutonium

1. plutonium (chemical element)

plutonium n (definite singular plutoniumet) (uncountable)

1. plutonium (chemical element, symbol Pu)

plutonium n (definite singular plutoniumet) (uncountable)

1. plutonium (as above)

• Audio:

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plutonium n

1. plutonium

• plutonium in Svensk ordbok (SO)
• plutonium in Svenska Akademiens ordlista (SAOL)
• plutonium in Svenska Akademiens ordbok (SAOB)
• Svensk MeSH