A5

A5 UK [ˌeɪ ˈfaɪv] US noun [uncountable]

a small size of paper about 6 inches or 148 millimetres wide and 8.5 inches or 210 millimetres long

Thesaurus: types and forms of paper_hyponym

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n. [mass noun] a standard European size of paper, 210 × 148 mm

[as modifier] a little A5 booklet

■ paper of this size

printed on A5