a4
C1Technical, Office, Business
Definition
Meaning
A standard international paper size measuring 210 by 297 millimetres (8.27 by 11.69 inches).
Used metonymically to refer to a sheet of paper itself, particularly in office and printing contexts. Can informally denote bureaucracy or official paperwork.
Linguistics
Semantic Notes
The term is an alphanumeric code ('A4') but is often written in lowercase in running text. It refers specifically to the ISO 216 standard size. It is often used as a noun adjunct (e.g., A4 paper, A4 sheet).
Dialectal Variation
British vs American Usage
Differences
While the ISO standard is used in both regions, 'Letter' size (8.5 by 11 inches) is the dominant everyday paper size in the US. 'A4' is a more familiar term in the UK and internationally.
Connotations
In the UK/EU, it connotes standard, everyday paper. In the US, it often connotes a specific, slightly taller/narrower international or European paper size.
Frequency
Much more frequent in UK English and other countries using the ISO system. In US English, 'Letter size' is far more common in everyday speech.
Vocabulary
Collocations
Grammar
Valency Patterns
N of A4A4 Non A4in A4 formatVocabulary
Synonyms
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “buried under a mountain of A4”
- “death by a thousand A4s”
Usage
Context Usage
Business
Standard for reports, contracts, and correspondence in international and UK businesses.
Academic
Common format for theses, dissertations, and journal submissions in many countries.
Everyday
Referring to the paper in a home printer or notepad.
Technical
Precise term in printing, design, and office supply industries.
Examples
By Part of Speech
adjective
British English
- Please submit an A4 report.
- The brochure is printed on A4 gloss paper.
American English
- We need the document in A4 format for the international client.
- The machine can handle A4 and Letter sizes.
Examples
By CEFR Level
- I need some white A4 paper for my printer.
- The application form must be printed on a single sheet of A4.
- European standards require all technical documentation to be presented in A4 format.
- The switch from Letter to A4 size across the multinational's offices was a costly but necessary standardization move.
Learning
Memory Aids
Mnemonic
A4 is For documents worldwide: A for the standard series, 4 for its specific place in the sequence (half of A3, double A5).
Conceptual Metaphor
PAPER IS A CONTAINER (e.g., 'Fill three A4s with your analysis'), STANDARDIZATION IS UNIFORMITY.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'лист А4' in every context; in running text, 'a sheet of A4' or 'A4 paper' is more natural.
- Do not use Cyrillic 'А4'; the 'A' is Latin.
Common Mistakes
- Writing 'A4 paper size' (redundant)
- Using 'a A4 sheet' (should be 'an A4 sheet')
- Confusing A4 with US Letter size.
Practice
Quiz
Which of the following is a key difference between UK and US usage of 'A4'?
FAQ
Frequently Asked Questions
No, they are different. A4 is 210 x 297 mm, while US Letter is 216 x 279 mm. A4 is taller and narrower.
It is part of the ISO 216 'A' series, where A0 has an area of 1 square metre. A4 is A0 folded in half four times.
Yes, but there will be small margins or scaling differences. It's best to adjust the document layout for the target paper size.
Use 'an' because 'A4' begins with a vowel sound (/eɪ/). Correct: 'an A4 sheet'.