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 naai^5-1), which is near homophonous to English C nine.

Pronunciation

• Cantonese (Jyutping): si¹ naai¹

---

• Cantonese
  • (Standard Cantonese, Guangzhou–Hong Kong)⁺
    • Jyutping: si¹ naai¹
    • Yale: sī nāai
    • Cantonese Pinyin: si¹ naai¹
    • Guangdong Romanization: xi¹ nai¹
    • Sinological IPA ^(key): /siː⁵⁵ naːi̯⁵⁵/

Noun

C9

1. (Hong Kong Cantonese, Internet slang) alternative form of 師奶 / 师奶 (si¹ naai^5-1)

Coordinate terms

• C6