- a galaxy consisting of an ellipsoidal nucleus of old stars from opposite sides of which arms, containing younger stars, spiral outwards around the nucleus. In a barred spiral the arms originate at the ends of a bar-shaped nucleus
| 单词 | spiral galaxy |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 spi′ral gal′axy, [Astron.]
Collins Concise English Dictionary © HarperCollins Publishers:: spiral galaxy n
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