googillion

noun

"googillion" is a 10-letter English headword indexed on PlainSpell.

The verdict

“googillion” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An indefinitely large number.

Corpus desk

Index EN-googillion · googillion · English

googillion · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "G" thin
  • PHOTO-UNK Peer pending

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.

Key facts for googillion
PropertyValue
Headwordgoogillion
LanguageEnglish
Part of speechNoun
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “googillion” in English

googillionfalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

googillion is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "An indefinitely large number.".

googillion has no tracked misspelling variants, which points to an orthography that plays by predictable English rules. This headword has no recorded confusable partner, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From googol + -illion, which would imply a very large power of ten. The correct English form is googillion, spelled G-O-O-G-I-L-L-I-O-N.

Definition

  1. 1
    An indefinitely large number.

Recorded use

Wiktionary examples

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

  1. 1996 February 18, John Carl Pryor, “Re: A New Theory of Free Will -- continuation of an Open Letter to Professor Penrose”, alt.philosophy.objectivism, alt.sci.physics.new-theories, sci.physics, comp.ai, comp.ai.philosophy, sci.philosophy.meta, alt.memetics, and alt.extropians, Usenet Thus what measurement outside of time and space do we use to measure tim…
  2. So, if this is what your^([sic – meaning you're]) trying to do, do a web search on CGI and read on^([sic – meaning one]) of the googillion tutorials on the subject.

Etymology

From googol + -illion, which would imply a very large power of ten.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "googillion"?
"googillion" is spelled G-O-O-G-I-L-L-I-O-N.
What does "googillion" mean?
As a noun, "googillion" means: An indefinitely large number.
What is the origin of the word "googillion"?
From googol + -illion, which would imply a very large power of ten. 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.

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

Source: FrequencyWords open word-frequency list