A4

British

noun

See also A sizes
1. a standard paper size, 210 × 297 mm
2. ( as adjective )
  
  an A4 book

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

But Donio isn’t giving up his 2020 Audi A4, which he enjoys despite it having the feature he despises.

From The Wall Street Journal • Apr. 3, 2026

"We were given a piece of A4 paper, and essentially told to make the most of the time we had."

From BBC • Mar. 31, 2026

More than 2 terabytes of data could fit within the area of a single A4 sheet of paper using this approach.

From Science Daily • Mar. 29, 2026

Visitors will be allowed to take small handbags, as long as they are no larger than A4 in size.

From BBC • Mar. 6, 2026

He'd stuck a Post-it on the front with a simple message—Plant this!—and the initial A4 hastily scrawled in the corner.

From "City of the Plague God" by Sarwat Chadda

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023