protostellaradj.
/ˌprəʊtə(ʊ)ˈstɛlə/, U.S. /ˌproʊdoʊˈstɛlər/ Astronomy.
Of, relating to, or of the nature of a protostar or protostars.
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prestellar1897
protostellar1968
presolar1973
1968 Diss. Abstr. B. 29 857/1 The central stellar core..grows in mass as the surrounding material falls into it, finally becoming an ordinary star when all of the orignal protostellar material has been accreted.
1975 Nature 6 Feb. 393/2 The initially low metal abundance could radically alter..the cooling of the gas required for protostellar collapse.
2002 H. J. Morowitz Emergence of Everything viii. 58 In addition to the primordial hydrogen and helium, the higher-generation protostellar cloud has many other atomic varieties.
This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).
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