A3

¹ British

noun

See also A sizes
1. a standard paper size, 297 × 420 mm
2. ( as adjective )
  
  an A3 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

A3 ² British

abbreviation

text messaging anytime, anywhere, anyplace

"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.

Having lost 1-0 at Wembley in April, the world champions needed to respond to erode England's three-point advantage at the top of Group A3.

From BBC • Jun. 5, 2026

BYD unveiled the Xuanji A3, a 4 nanometer autonomous-driving chip, at its technology day in Shenzhen, China.

From The Wall Street Journal • May 29, 2026

The drawings sketched for Attenborough's 99th birthday last year spanned across eight A3 sheets of paper and took Max four days to complete.

From BBC • May 7, 2026

The facility received an A3 rating from Moody’s, marking the first time a loan backed by high-performance computing infrastructure has achieved investment-grade status.

From Barron's • Apr. 2, 2026

Equation 19 fixed the longitude position of the satellite at time T. Equation A3 accounted for errors in longitude.

From "Hidden Figures" by Margot Lee Shetterly

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