A3
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A one-page document, often tabular or graphical, on such paper. countable, usually
- 2 A3 class, a class of steam locomotive used on the London and North Eastern Railway. UK, uncountable, usually
Etymology
See the Wikipedia article ISO 216, the international standard on paper sizes.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.