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