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supermassive star

[soo-per-mas-iv, soo-] /ˈsu pərˈmæs ɪv, ˌsu-/
noun
1.
Astronomy. a star with a mass more than fifty times the mass of the sun.
Origin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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