Word.ws English Dictionary

A3

A3 noun: a one-page document, often tabular or graphical, on such paper.

Noun

A3 (usually uncountable, plural A3s)

  1. (countable, usually) A one-page document, often tabular or graphical, on such paper.
  2. (UK, usually) A3 class, a class of steam locomotive used on the London and North Eastern Railway.

Forms of A3

pluralA3s

Origin of A3

See the Wikipedia article ISO 216, the international standard on paper sizes.

Questions about A3

What does A3 mean?
A3 means a one-page document, often tabular or graphical, on such paper.
What part of speech is A3?
A3 is a noun.
What is the plural of A3?
The plural of A3 is A3s.

Words near A3 in the dictionary

  1. A2Cs
  2. A2M
  3. A2P
  4. A2S
  5. A2Ss
  6. A3
  7. A3C
  8. A3Cs
  9. A3s
  10. A4
  11. A415

Source and license

Adapted from Wiktionary: A3 (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “A3.” Word.ws, https://word.ws/a3. Based on Wiktionary, CC BY-SA 4.0.