Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
broad-mindedness is a noun meaning "an inclination to tolerate or overlook opposing or shocking opinions or behavior". It carries one recorded sense.
an inclination to tolerate or overlook opposing or shocking opinions or behavior
Definitions, synonyms and semantic relations for broad-mindedness come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.