quarto

noun

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

"quarto" is a 6-letter English headword indexed on PlainSpell.

The verdict

“quarto” is uncommon English (frequency #53,191 among 288 “Q” headwords), classed as a noun. The kind of spelling people second-guess.

#53,191
frequency rank, English
288
“Q” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A size of paper (7.5"-10" x 10"-12.5" or 190-254 x 254-312 mm). Formed by folding and cutting one of several standard sizes of paper (15"-20" x 20"-25" or 381-508 x 508-635 mm) twice to form 4 leav...

Corpus desk

Index EN-quarto · quarto · English

quarto · rank #53,191 · 0 variants · 0 confusables

  • FREQ-RARE #53,191
  • LEN-LONG 6 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 288
  • PHOTO-FINISH QD

Nearest frequency peer: QD (-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.

Long-tail ranks near “quarto”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “quarto” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for quarto
PropertyValue
Headwordquarto
LanguageEnglish
Part of speechNoun
Letters6
Frequency rank#53,191
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “quarto” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).quartofalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “QD” (#53,190), “questioner” (#53,192), “puta” (#53,189). Among 288 “Q” headwords, “quarto” is #53,191. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

quarto is uncommon English at frequency #53,191 among 288 “Q” headwords, classed as anoun. Rarity is why readers land here mid-draft. 3 senses are on record.

Our edit-distance generator produced no likely misspellings for quarto, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From Latin quartus (“fourth”). The correct English form is quarto, spelled Q-U-A-R-T-O.

Definition

  1. 1
    A size of paper (7.5"-10" x 10"-12.5" or 190-254 x 254-312 mm). Formed by folding and cutting one of several standard sizes of paper (15"-20" x 20"-25" or 381-508 x 508-635 mm) twice to form 4 leaves (eight sides).
  2. 2
    A size of paper (7.5"-10" x 10"-12.5" or 190-254 x 254-312 mm). Formed by folding and cutting one of several standard sizes of paper (15"-20" x 20"-25" or 381-508 x 508-635 mm) twice to form 4 leaves (eight sides).
  3. 3
    A book size, corresponding to the paper size.

Recorded use

Wiktionary example

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

  1. Beneath an old ebony table were two long carved oak chests. I lifted the lid of one, and at the top was a once-white surplice covered with dust, and beneath was a mass of tracts — Commonwealth Quartos, unbound — a prey to worms and decay.

Etymology

From Latin quartus (“fourth”).

Synonyms

4to4ºQ

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 "quarto"?
"quarto" is spelled Q-U-A-R-T-O.
What does "quarto" mean?
As a noun, "quarto" means: A size of paper (7.5"-10" x 10"-12.5" or 190-254 x 254-312 mm). Formed by folding and cutting one of several standard sizes of paper (15"-20" x 20"-25" or 381-508 x 508-635 mm) twice to form 4 leav...
What is the origin of the word "quarto"?
From Latin quartus (“fourth”). 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 "quarto", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 6 letters (nearest by frequency rank).

qwerty#53,195prenup#53,182prelim#53,180Renaud#53,210

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

Source: FrequencyWords open word-frequency list