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A3

1 British  

noun

  1. 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

  1. 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.

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

Johnson said researchers think this is the first detection of the A3 variation of the virus on the Pacific Coast and therefore likely a new introduction into North America, she said.

From Los Angeles Times • Mar. 12, 2026

The two sides will meet again in Group A3 on Tuesday, 14 April, with an evening kick-off time to be announced in due course.

From BBC • Nov. 17, 2025

The inquest heard how two passers-by found him trapped underneath the Audi A3 and raised the alarm.

From BBC • Aug. 20, 2025

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

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