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 leaves. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
quarto
(paper) A size of paper (7.5"-10" x 10"-12.5" or 190-254 x 254-312 mm).
Seen in the wild
10 citations · last seen May 2026
Seen in the wild
BlueskyMay 2026
Mato Grosso produz um quarto do biodiesel do Brasil e lidera setor https://cenariomt.com.br/agro/mato-grosso-produz-um-quarto-do-biodiesel-do-brasil-e-lidera-setor/
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BlueskyMay 2026
Os direitos de reler e de poder ler qualquer coisa O quarto direito do leitor para Pennac (2008) é o direito de encruzilhadas.pt
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BlueskyMay 2026
RS Notícias: Câmara de Porto Alegre aprova flexibilização da taxa de permeabilidade no Quarto Distrito – www.rsnoticias.top Fonte: RS Notícias: Câmara de Porto Alegre aprova flexibilização da taxa de permeabilidade n…
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BlueskyMay 2026
To save the house, the girl must consult a mouldering quarto volume, which contains fairy tales.
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BlueskyMay 2026
Alieno LeBron! 12 punti nel 1° quarto, 27 totali, ma i Lakers perdono così! Le prodezze di LeBron James... https://video.gazzetta.it/basket/nba/alieno-lebron-12-punti-nel-1-quarto-27-totali-ma-i-lakers-perdono-cosi/7b…
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Definitions
UK
#1·Apr 27, 2026UK
(paper) 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).
For parents
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 leaves. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
For ESL learners
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). Register: neutral, standard English. A common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; native speakers immediately notice when slang appears in formal contexts, so always check the surrounding register before producing it yourself.
Heard in the wild
“Mato Grosso produz um quarto do biodiesel do Brasil e lidera setor https://cenariomt.com.br/agro/mato-grosso-produz-um-quarto-do-biodiesel-do-brasil-e-lidera-setor/”
— Bluesky· May 2026“Os direitos de reler e de poder ler qualquer coisa O quarto direito do leitor para Pennac (2008) é o direito de encruzilhadas.pt”
— Bluesky· May 2026“RS Notícias: Câmara de Porto Alegre aprova flexibilização da taxa de permeabilidade no Quarto Distrito – www.rsnoticias.top Fonte: RS Notícias: Câmara de Porto Alegre aprova flexibilização da taxa de permeabilidade no Quarto Distrito”
— Bluesky· May 2026“To save the house, the girl must consult a mouldering quarto volume, which contains fairy tales.”
— Bluesky· May 2026“Alieno LeBron! 12 punti nel 1° quarto, 27 totali, ma i Lakers perdono così! Le prodezze di LeBron James... https://video.gazzetta.it/basket/nba/alieno-lebron-12-punti-nel-1-quarto-27-totali-ma-i-lakers-perdono-cosi/7baa1ede-c53f-4b9b-8c19-7cc88feccxlk”
— Bluesky· May 2026
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UK
#2·Apr 27, 2026UK
(printing) A book size, corresponding to the paper size.
Cluster: general
Heard in the wild
“passando fome pq mnh mae acendeu cigarro p pomba gira e o cheiro veio no meu quarto”
— Bluesky· May 2026“"i want the real deal coffee" hospede americano sobre a maquina de café que tem no quarto istg”
— Bluesky· May 2026“White Lion, an imprint of Quarto, is set to publish the official tie-in book for Channel 4’s Game of Wool 👇 #BookSky”
— Bluesky· May 2026“Na próxima, vou no seu quarto pra estudar e você fica me observando”
— Bluesky· May 2026“eu, mochi e sr gatinho subimos pro quarto dps do almoço enquanto a diarista limpava a sala pq mochi tava agoniado, sr. gatinho tinha reunião e eu tinha que desenhar e tava espirrando mt na sala. resultado: nós três tiramos um cochilo assim que parou o barulho de aspirador”
— Bluesky· May 2026
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For specific readers
Why is this section here?
Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.
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UK
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🇬🇧About British & Irish slang slang
UK and Irish slang — Cockney, Scouse, Geordie, Yorkshire, Glaswegian, Brummie, Welsh, West Country, plus Irish English. Centuries of regional dialects feeding into modern British and Irish street talk.
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Other words near "quarto" (Q)
quarterlessquarterly courtquarter notequarter-sectionquarter-up pricequarter waterquartz reeferquatequattuordecillionquawkqueanqueanie
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Semantically related
- legal-size60%
(US) Of paper: in sheets measuring 8.5 × 14 inches (215.9 × 355.6 mm).
- token54%
Ten and a half quires, or, commonly, 250 sheets, of paper printed on both sides; also, in some cases, the same number of sheets printed on one side, or half the number printed on both sides.
- long53%
Measuring 8½ in × 14 in.
- printer's ream53%
(UK, printing, dated) Twenty-one and a half quires of paper, i.e. 516 sheets.