Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
nicene is an adjective meaning "of or relating to the ancient city of Nicaea in Asia Minor". It carries one recorded sense.
of or relating to the ancient city of Nicaea in Asia Minor
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 nicene come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.