Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
one-dimensionality is a noun meaning "the property of having one dimension". It carries one recorded sense.
the property of having one dimension
Definitions, synonyms and semantic relations for one-dimensionality come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.