plutonium

/pluːˈtoʊniəm/

//pluːˈtoʊniəm// noun

By · According to Wiktionary data (CC BY-SA) ·

"plutonium" is a 9-letter English headword indexed on PlainSpell.

The verdict

“plutonium” has 13 generated spelling variants in the English index at frequency #21,318. The variants make it a useful spelling check.

#21,318
frequency rank, English
46,516
“P” headwords
13
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray fissile radioactive actinide metal that tarnishes when exposed to air.

Key facts for plutonium
PropertyValue
Headwordplutonium
LanguageEnglish
Part of speechNoun
IPA/pluːˈtoʊniəm/
Letters9
Frequency rank#21,318
Misspellings tracked13
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “plutonium” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). plutonium lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 13 spelling variants around plutonium (IPA /pluːˈtoʊniəm/), anoun. Corpus frequency is #21,318 among 46,516 “P” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 13 likely wrong-spelling variants for plutonium, with forms such as "lputonium", "pllutonium", and "pltuonium". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It is not paired with a close-neighbour confusable in our dataset, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: After Pluto (dwarf planet) + -n- + -ium. More in Wikipedia at plutonium § History. The correct English form is plutonium, spelled P-L-U-T-O-N-I-U-M.

Definition

  1. 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.
  2. 2
    Alternative form of ploutonion.

Etymology

After Pluto (dwarf planet) + -n- + -ium. More in Wikipedia at plutonium § History.

This word in other languages

plutonio(Español)plutonium(Français)Plutonium(Deutsch)plutónio(Português)

Common misspellings

Also misspelled as:

  • lputonium
  • pllutonium
  • pltuonium
  • pluotnium
  • plutnoium
  • plutoinum
  • plutonimu
  • plutoniumm
  • plutonnium
  • plutonuim
  • pluttonium
  • pplutonium
  • pultonium

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of plutonium - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

lputonium2pllutonium1pltuonium2pluotnium2plutnoium2plutoinum2plutonimu2plutoniumm1
Edit distance from "plutonium"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "plutonium"?
"plutonium" is spelled P-L-U-T-O-N-I-U-M. The IPA pronunciation is /pluːˈtoʊniəm/.
What does "plutonium" mean?
As a noun, "plutonium" means: The transuranic chemical element with atomic number 94 and symbol Pu: a silvery-gray fissile radioactive actinide metal that tarnishes when exposed to air.
What are common misspellings of "plutonium"?
Common misspellings include "lputonium", "pllutonium", "pltuonium", "pluotnium", "plutnoium". The correct spelling is "plutonium".
How do you pronounce "plutonium"?
The IPA (International Phonetic Alphabet) transcription for "plutonium" is /pluːˈtoʊniəm/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "plutonium"?
After Pluto (dwarf planet) + -n- + -ium. More in Wikipedia at plutonium § History. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “plutonium”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is P-L-U-T-O-N-I-U-M - every other letter order is a misspelling in standard orthography.
  • Say it as /pluːˈtoʊniəm/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Same frequency band

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list