A3

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A one-page document, often tabular or graphical, on such paper. countable, usually
  2. 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.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.