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Definition A4 in British English

A4 noun

[uncountable] noun
/ˌeɪ ˈfɔː(r)/
1

a standard size of paper about 8.5 inches or 210 millimetres wide and 11.5 inches or 297 millimetres long

Synonyms and related words
A3 A4 A5
Definition A4 in British English