protosun
/ˈprəʊtə(ʊ)sʌn/Astronomy
noun
The sun at an early stage of its formation, before becoming dense enough to sustain nuclear reactions.
Origin
1940s; earliest use found in Scientific Monthly. From proto- + sun.
| 单词 | protosun |
| 释义 | protosun/ˈprəʊtə(ʊ)sʌn/Astronomy noun The sun at an early stage of its formation, before becoming dense enough to sustain nuclear reactions. Origin |
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