Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
9th is an adjective meaning "coming next after the eighth and just before the tenth in position". It carries one recorded sense.
Definitions, synonyms and semantic relations for 9th come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.