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say it: ek-struh-guh-LAK-tik
extragalactic is an adjective meaning "outside or beyond a galaxy". It carries one recorded sense.
outside or beyond a galaxy
“extragalactic nebula”
Definitions, synonyms and semantic relations for extragalactic come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.