9

A West Arabic numeral, ultimately from Indic numerals (compare Devanagari ९ (9)). See 9 § Evolution of the Hindu–Arabic digit for more.

9 (prev 8, next 10)

1. The cardinal number nine.
2. A digit in the decimal system of numbering, and also hexadecimal.
4. September.

   Comeronyms: 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12

5. (phonetics, Sinosphere, often superscript) tone number 9, in some cases when the language does not have the usual 4 to 8 categories.

• Letter styles
• Lining digit 9.
• Oldstyle 9 in Fraktur script.

The following are equivalent forms as digits:

The following are only equivalent as representations of the cardinal number:

• American Sign Language:

• (Arabic digits): 0 1 2 3 4 5 6 7 8

Other representations of 9:

9 (plural 9s)

1. (sports, snowboarding, skiing) Clipping of 900 (“900° spin”).

• figure 9
• 9-gon

九 (gau², “nine”) and 鳩 / 鸠 (gau¹) are near homophones in Cantonese.

9

1. (Cantonese, slang, vulgar, euphemistic, leetspeak) alternative form of 鳩 / 鸠
2. (Cantonese, slang, leetspeak, derogatory or self-deprecatory) alternative form of 狗 (gau², “unpleasant person”)

   DC9 [Cantonese]  ―  di¹ si¹ gau² [Jyutping]  ―  taxi driver

   IT9 [Cantonese]  ―  aai¹ ti¹ gau² [Jyutping]  ―  IT worker

9

1. (Cantonese, slang, vulgar, euphemistic, leetspeak) alternative form of 鳩 / 鸠