Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
derivational is an adjective meaning "characterized by inflections indicating a semantic relation between a word and its base". It carries one recorded sense.
characterized by inflections indicating a semantic relation between a word and its base
“the morphological relation between `sing' and `singer' and `song' is derivational”
Definitions, synonyms and semantic relations for derivational come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .