plutonium

Name: plutonium, English Word Data
Creator: Wiktionary
License: https://creativecommons.org/licenses/by-sa/4.0/

/pluːˈtoʊniəm/

//pluːˈtoʊniəm// noun

By PlainSpell · According to Wiktionary data (CC BY-SA) · analyzed September 3, 2026

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: 4,417
“P” headwords: 13
tracked misspellings

According to Wiktionary data (CC BY-SA, analyzed September 3, 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.

Corpus desk

Index EN-plutonium · plutonium · English

plutonium · rank #21,318 · 13 variants · 0 confusables

FREQ-MID #21,318
LEN-LONG 9 letters
VOW-4 4 vowels
CONFUS-0 No pairs
VAR-HIGH 13 variants
BOOK-MID 4,417
PHOTO-FINISH plethora

Nearest frequency peer: plethora (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

pitiful

78,686
plethora

78,684
plutonium

78,683
PowerPoint

78,682
prerequisite

78,681
psychosis

78,680

What this shows “plutonium” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Key facts for plutonium
Property	Value
Headword	plutonium
Language	English
Part of speech	Noun
IPA	/pluːˈtoʊniəm/
Letters	9
Frequency rank	#21,318
Misspellings tracked	13
Confusable pairs	0
Source	Wiktionary (kaikki.org)

Frequency seat of misspelling magnet “plutonium”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).plutoniumlands here:

#21,318

#1#100#1K#10K#100K

← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “plethora” (#21,317), “PowerPoint” (#21,319), “prerequisite” (#21,320). Among 4,417 “P” headwords, “plutonium” is #21,318. 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 4,417 “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
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
Alternative form of ploutonion.

Recorded use

Wiktionary examples

These source excerpts show how plutonium appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

Plutonium? You mean this sucker's nuclear?
The Samson Option states that Moshe Dayan gave the go-ahead for starting weapon production in early 1968, putting the plutonium separation plant into full operation.

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.

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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "plutonium", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

psychosis#21,321 paternity#21,310 rectangle#21,329 recurrent#21,330

Similar misspelling depth

Headwords with a similar count of attested misspellings (13 here; floor ≥5).

reopening13 variants moustache13 variants semifinal13 variants syllables13 variants