Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
psychiatrical is an adjective meaning "relating to or used in or engaged in the practice of psychiatry". It carries one recorded sense.
relating to or used in or engaged in the practice of psychiatry
“psychiatric disorder”
“psychiatric hospital”
Definitions, synonyms and semantic relations for psychiatrical come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.