noun, noun which may take the genitive case particle 'no'
ninth
Ordinal number meaning 'ninth' in a sequence. Can be used as a noun or with の to modify another noun.
彼はマラソンで第九位だった。
He placed ninth in the marathon.
第九条には重要な規定がある。
Article 9 contains an important provision.
noun
Beethoven's Ninth Symphony
Abbreviation of 第九交響曲 (だいくこうきょうきょく), referring specifically to Beethoven's Symphony No. 9. Commonly used in contexts like year-end performances.
年末に第九を歌うのが恒例だ。
It's a tradition to sing Beethoven's Ninth at the end of the year.
Also means 'ninth', but is more colloquial and emphasizes position in a list or order, while 第九 is more formal and often used in titles or numbered items.
The full, unabbreviated term for Beethoven's Ninth Symphony. 第九 is the common abbreviation.
Compound of 第 (だい, ordinal prefix) and 九 (く, nine). The abbreviation for Beethoven's Ninth Symphony comes from shortening 第九交響曲.