from the GNU version of the Collaborative International Dictionary of English.

  • adjective of or pertaining to achondrite.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective geology Of or pertaining to achondrite, a type of stony meteorite

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective not having a granular structure
  • adjective of or related to an achondrite


from Wiktionary, Creative Commons Attribution/Share-Alike License

achondrite +‎ -ic


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  • The tiny rock, known as MM40, is the first achondritic basaltic micrometeorite ever found on

    Universe Today 2009

  • In the case of one or several surface impact (s) of achondritic projectile (s), which could explain the absence of PGEs in the studied BA/YD sections, it becomes difficult to explain the formation of nanodiamonds without a well-dated surface expression of one or several craters. 2009

  • Alternatively, to avoid PGE enrichment, it is possible to invoke the impact of one or several differentiated, PGEs-poor, possibly still unknown type of achondritic meteorites that vaporized in Earth's atmosphere at the BA/YD transition is one possibility. 2009

  • In the scenario of a 1 - to 2-km diameter achondritic, PGEs-poor projectile exploding into the atmosphere or hitting only the Laurentide Ice Sheet, a crater would possibly not have been formed. 2009


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  • B.B.C. News: 'Achondritic meteorites were formed when the Solar System's planets were coming into being. The substances in such meteorites and the processes they have undergone can give clues about how the larger bodies were formed.

    'By contrast, chondritic meteorites were formed during the the Solar System's early days before material had accreted into planets. They have not been altered by the melting and re-crystalisation that has utterly transformed the nature of, say, Earth rocks.'

    April 7, 2009