Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
uncultivable is an adjective meaning "not suitable for cultivation or tilling". It carries one recorded sense.
not suitable for cultivation or tilling
“thickets of indigenous trees...on uncultivable land”
Definitions, synonyms and semantic relations for uncultivable come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.