Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
topographically is an adverb meaning "with regard to topography". It carries one recorded sense.
with regard to topography
“the geological environment is the primary factor in determining the character of a country not only topographically but historically”
Definitions, synonyms and semantic relations for topographically come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.