Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
geologically is an adverb meaning "with respect to geology". It carries one recorded sense.
with respect to geology
“geologically speaking, this area is extremely interesting”
Definitions, synonyms and semantic relations for geologically come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.