from The Century Dictionary.

  • Having the characters of or pertaining to the Blastoidea: as, a blastoid crinoid.
  • noun An echinoderm of the group Blastoidea.

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

  • noun (Zoöl.) One of the Blastoidea.

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

  • noun zoology One of the Blastoidea.


Sorry, no etymologies found.


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  • Later Paleozoic seas were dominated by crinoid and blastoid echinoderms, articulate brachiopods, graptolites, and tabulate and rugose corals.

    Paleozoic 2009

  • The Permian extinction, 244 million years ago, devastated the marine biota: tabulate and rugose corals, blastoid echinoderms, graptolites, and most crinoids died out, as did the last of the trilobites.

    Paleozoic 2009

  • The blastoid is stemmed and armless, and its globular "head" or

    The Elements of Geology William Harmon Norton 1900


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