noun Date: 1947 a cloud of gas and dust in space believed to develop into a star

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • ProtoStar — Ltd is a private company incorporated in Bermuda, with U.S. operations based in San Francisco, California and Asian operations based in Singapore. ProtoStar intends to operate an initial fleet of three geostationary satellites. [cite web… …   Wikipedia

  • ProtoStar — Ltd est une opérateur de satellites de télécommunications, basé aux Bermudes qui à terme doit gérer une flotte de 3 satellites de télécommunications dont 2 ont été lancés (2009). La société est implantée à San Francisco pour ses opérations aux… …   Wikipédia en Français

  • protostar — 1954, from PROTO (Cf. proto ) + STAR (Cf. star) …   Etymology dictionary

  • protostar — [prōt′ō stär΄] n. in some cosmological theories, any of the millions of swirling clouds of dust and hydrogen gas that form within a protogalaxy and eventually evolve into thermonuclear stars …   English World dictionary

  • ProtoStar — Vorlage:Infobox Kommunikationssatellit/Wartung/betreiber ProtoStar 1 Startdatum 7. Juli 2008 Trägerrakete Ariane 5 NSSDC ID 2008 034A Startmasse 4100 kg Hersteller …   Deutsch Wikipedia

  • Protostar — A protostar is a large object that forms by contraction out of the gas of a giant molecular cloud in the interstellar medium. The protostellar phase is an early stage in the process of star formation. For a solar mass star it lasts about 100,000… …   Wikipedia

  • protostar — /proh toh stahr /, n. Astron. 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 …   Universalium

  • protostar — noun A collection of gas and dust in space with high temperature that usually grows to the point of beginning nuclear fusion and becoming a star …   Wiktionary

  • protostar — pro·to·star …   English syllables

  • protostar — /ˈproʊtoʊsta/ (say prohtohstah) noun a developing star consisting of condensing interstellar gas and dust …   Australian English dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”