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