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English definition of “nebula”

nebula

noun [C]    /ˈneb·jə·lə/ (plural -las or -lae  /ˈneb·jə·li, -ˌlɑɪ/)
earth science a cloud of dust or gas in outer space : The Orion Nebula is visible to the naked eye under dark skies. nebular    /ˈneb·jə·lər/ adjective [not gradable] earth science
(Definition of nebula noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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