protostar
/proh-toh-stahr/US // ˈproʊ toʊˌstɑr //UK // (ˈprəʊtəʊˌstɑː) //
原星,原子星,原星号,原生星
Definitions
n.名词 noun
- 1
Astronomy.
- : an early stage in the evolution of a star, after the beginning of the collapse of the gas cloud from which it is formed, but before sufficient contraction has occurred to permit initiation of nuclear reactions at its core.
Level 3Browse all words →