Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
descriptively is an adverb meaning "by giving a description". It carries one recorded sense.
by giving a description
“these topics need to be treated not just descriptively”
Definitions, synonyms and semantic relations for descriptively come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.