Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
hereinafter is an adverb meaning "in a subsequent part of this document or statement or matter etc.". It carries one recorded sense.
Definitions, synonyms and semantic relations for hereinafter come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.