trillion

/ˈtɹɪljən/

//ˈtɹɪljən// num

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

"trillion" is a 8-letter English headword indexed on PlainSpell.

The verdict

“trillion” has 10 generated spelling variants in the English index at frequency #9,833. The variants make it a useful spelling check.

#9,833
frequency rank, English
3,151
“T” headwords
10
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Either of two large amounts:

Corpus desk

Index EN-trillion · trillion · English

trillion · rank #9,833 · 10 variants · 1 confusable

  • FREQ-COMMON #9,833
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • CONFUS-LOW 1 pairs
  • VAR-MID 10 variants
  • BOOK-MID 3,151
  • PHOTO-FINISH traumatic

Nearest frequency peer: traumatic (-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.

Rank peers near misspelling magnet “trillion”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

trillion vs trillions
89% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for trillion
PropertyValue
Headwordtrillion
LanguageEnglish
Part of speechNumeral
IPA/ˈtɹɪljən/
Letters8
Frequency rank#9,833
Misspellings tracked10
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “trillion”

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

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “traumatic” (#9,832), “tucker” (#9,834), “tearing” (#9,831). Among 3,151 “T” headwords, “trillion” is #9,833. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 10 spelling variants around trillion (IPA /ˈtɹɪljən/), anumeral. Corpus frequency is #9,833 among 3,151 “T” headwords. Wiktionary lists 3 senses, so context still picks the gloss.

Our generated misspelling index lists 10 likely wrong-spelling variants for trillion, with forms such as "rtillion", "tirllion", and "trililon". 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 also participates in 1 confusable-pair relationship, "trillions", a pairing that trips writers up because the two words share enough sound or shape to blur together.

Etymologically, the entry records: Borrowed from French trillion, from French tri- (“three”) + -illion, equivalent to tri- + -illion. The noun was coined by American basketball player Harvey Pollack, because of the way the numbers read across a basketball box score. The correct English form is trillion, spelled T-R-I-L-L-I-O-N.

Definition

  1. 1
    Either of two large amounts:
  2. 2
    Either of two large amounts:
  3. 3
    An unspecified very large number.

Recorded use

Wiktionary examples

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

  1. Javik: Stand in the ashes of a trillion dead souls and ask the ghosts if honor matters. Their silence is your answer.
  2. Data published by the Treasury Department showed that “total public debt outstanding” rose to $34.001 trillion on December 29.

Etymology

Borrowed from French trillion, from French tri- (“three”) + -illion, equivalent to tri- + -illion. The noun was coined by American basketball player Harvey Pollack, because of the way the numbers read across a basketball box score.

This word in other languages

billón(Español)billion(Français)Billion(Deutsch)bilião(Português)

Common misspellings

Also misspelled as:

  • rtillion
  • tirllion
  • trililon
  • trilion
  • trillino
  • trillionn
  • trilloin
  • trlilion
  • trrillion
  • ttrillion

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of trillion - 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.

rtillion2tirllion2trililon2trilion1trillino2trillionn1trilloin2trlilion2
Edit distance from "trillion"

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 "trillion"?
"trillion" is spelled T-R-I-L-L-I-O-N. The IPA pronunciation is /ˈtɹɪljən/.
What does "trillion" mean?
As a numeral, "trillion" means: Either of two large amounts:
What words are commonly confused with "trillion"?
"trillion" is commonly confused with "trillions". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "trillion"?
The IPA (International Phonetic Alphabet) transcription for "trillion" is /ˈtɹɪljən/. 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 "trillion"?
Borrowed from French trillion, from French tri- (“three”) + -illion, equivalent to tri- + -illion. The noun was coined by American basketball player Harvey Pollack, because of the way the numbers read across a basketball box score. 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 "trillion", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 8 letters (nearest by frequency rank).

swinging#9,830sweeping#9,829surround#9,827starving#9,824

Similar misspelling depth

Headwords with a similar count of attested misspellings (10 here; floor ≥5).

Vatican10 variantstearing10 variantsstained10 variantsallergic10 variants

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

Source: FrequencyWords open word-frequency list