quadragesimo-octavo

noun

"quadragesimo-octavo" is a 18-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
19
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A paper size, (2.5"-3.1" x 2.5"-3.3"), one forty-eighth of a standard uncut flat sheet.

Corpus desk

Index EN-quadragesimo-octavo · quadragesimo-octavo · English

quadragesimo-octavo · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 19 letters
  • VOW-9 9 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "Q" 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 quadragesimo-octavo
PropertyValue
Headwordquadragesimo-octavo
LanguageEnglish
Part of speechNoun
Letters19
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “quadragesimo-octavo” in English

quadragesimo-octavofalls 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

quadragesimo-octavo is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

The misspelling generator found no plausible variants for quadragesimo-octavo, typically a sign the spelling maps closely to how the word sounds. No confusable counterpart is on file for this word, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From Latin ablatives of quadrāgēsimus (“fortieth”) and octāvus (“eighth”). The correct English form is quadragesimo-octavo, spelled Q-U-A-D-R-A-G-E-S-I-M-O---O-C-T-A-V-O.

Definition

  1. 1
    A paper size, (2.5"-3.1" x 2.5"-3.3"), one forty-eighth of a standard uncut flat sheet.
  2. 2
    A book size, (2.5"-3.1" x 2.5"-3.3"), corresponding to the paper size.

Etymology

From Latin ablatives of quadrāgēsimus (“fortieth”) and octāvus (“eighth”).

Synonyms

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 "quadragesimo-octavo"?
"quadragesimo-octavo" is spelled Q-U-A-D-R-A-G-E-S-I-M-O---O-C-T-A-V-O.
What does "quadragesimo-octavo" mean?
As a noun, "quadragesimo-octavo" means: A paper size, (2.5"-3.1" x 2.5"-3.3"), one forty-eighth of a standard uncut flat sheet.
What is the origin of the word "quadragesimo-octavo"?
From Latin ablatives of quadrāgēsimus (“fortieth”) and octāvus (“eighth”). 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