第九

dì-jiǔ
  1. ninth
  2. ninthly

Wiktionary

Examples

打開你的書到第九頁。

Open your book to page nine.

Source: Tatoeba

Entry Composition

1 第 dì
  1. (prefix indicating ordinal number, as in 第六 dìliù "sixth")
  2. (literary) grades in which successful candidates in the imperial examinations were placed
  3. (old) residence of a high official
  4. (literary) but; however
  5. (literary) only; just
2 九 jiǔ
  1. nine
  2. 9