C9

Translingual

Etymology

Specified in ISO 269.

Symbol

C9

  1. (international standards) ISO 269 standard paper size of 40 mm × 57 mm (1.57 in × 2.24 in), with a surface area of 22.8 cm2 (3.53 sq in).

See also

ISO 216/269 paper sizes
A series: 4A0 2A0 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10
B series: B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 B10
C series: C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10

Chinese

Etymology

From 師奶 / 师奶 (si1 naai5-1), which is near homophonous to English C nine.

Pronunciation

Noun

C9

  1. (Hong Kong Cantonese, Internet slang) alternative form of 師奶 / 师奶 (si1 naai5-1)

Coordinate terms

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