English

Noun

A0 ‎(uncountable)

1. The base size in the series of the international standard, set such that it has an area of 1 square metre, where the ratio between the width and the length equals square root of 2, and the width of each size is equal to the length of next smaller size; dimensions: 1189 x 841 mm (1189.21 x 840.90 mm).

See also

• (A paper sizes): 2A0   A0   A1   A2   A3   A4   A5   A6   A7   A8   A9   A10

Mandarin

Romanization

a0 (Zhuyin ㄚ˙)

1. Alternative spelling of a