Longman Dictionary of Contemporary English homepage

Topic: ASTRONOMY

Date: 1600-1700
Language: Latin
Origin: 'mist, cloud'

nebula

noun
     
neb‧u‧la plural nebulae [countable]
1HA a mass of gas and dust among the stars, which often appears as a bright cloud in the sky at night
2HA a galaxy (=mass of stars) which appears as a bright cloud in the sky at night
nebular adjective
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