Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An embryo at an early stage of development in which neurulation begins.

from The Century Dictionary.

  • noun An early stage in embryonic development, characterized by the first appearance of the central nervous system.

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

  • noun (Zoöl.) An embryo of certain invertebrates in the stage when the primitive band is first developed.

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

  • noun zoology An embryo, or certain invertebrates in the stage when the primitive band is first developed.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin : from Greek neuron, sinew, string, nerve; see (s)neəu- in Indo-European roots + Latin -ula, feminine diminutive suffix.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From New Latin, diminutive of Ancient Greek νεῦρον (neuron, "sinew, tendon, cord").

Examples

  • The whole performance does indeed remind me of the foldings and invaginations that the membranes of an embryo undergo as it morphs itself from blastula to gastrula to neurula.

    The God Delusion

  • Hui Zhao and Kosuke Tanegashima separated gastrula and early neurula embryos into several parts by microdissection, compared the different RNA populations by microarray analysis, and subjected individual genes with differential expression to further analysis.

    Journal of Biological Chemistry current issue

  • Hui Zhao and Kosuke Tanegashima separated gastrula and early neurula embryos into several parts by microdissection, compared the different RNA populations by microarray analysis, and subjected individual genes with differential expression to further analysis.

    Journal of Biological Chemistry current issue

  • What it illustrates is that we have great diversity in the earliest stages of development, in the blastula and gastrula and neurula, but that they all converge on a more similar form, the pharyngula, at what’s called the phylotypic stage…and then they diverge once again to achieve the diversity of adult forms.

    The Politically Incorrect Guide to Darwinism and Intelligent Design Review: Simply Incorrect Embryology (Chapter 3) - The Panda's Thumb

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