Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
12th is an adjective meaning "coming next after the eleventh and just before the thirteenth in position". It carries one recorded sense.
Definitions, synonyms and semantic relations for 12th come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.