Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
connectedness is a noun meaning "the state of being connected". It carries 2 recorded senses.
the state of being connected
“the connection between church and state is inescapable”
a relation between things or events (as in the case of one causing the other or sharing features with it)
“there was a connection between eating that pickle and having that nightmare”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for connectedness come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.