Definitions

from The Century Dictionary.

  • All those animals which are above the Protozoa, and which in the course of their development undergo certain metamorphoses, consisting of the primary segmentation of a true egg or ovum, and the subsequent passage through an embryonic condition in which they possess at least two distinct germinal layers: animals exhibiting cellular differentiation.

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

  • noun plural (Zoöl.) Those animals in which the protoplasmic mass, constituting the egg, is converted into a multitude of cells, which are metamorphosed into the tissues of the body. A central cavity is commonly developed, and the cells around it are at first arranged in two layers, -- the ectoderm and endoderm. The group comprises nearly all animals except the Protozoa.

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

  • proper noun A taxonomic subkingdom within the kingdom Animalia — the metazoa.

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

  • noun multicellular animals having cells differentiated into tissues and organs and usually a digestive cavity and nervous system

Etymologies

Sorry, no etymologies found.

Examples

  • You didn't answer this question, but said that molecular homology does indicate vertical descent (common ancestry from an actual cell) in Metazoa, “the group located above the Darwinian threshold.”

    A Disclaimer for Behe?

  • "Planula" theory, according to which the ancestral form of the Metazoa was a two-layered closed sac formed typically by delamination, less often by invagination.

    Form and Function A Contribution to the History of Animal Morphology

  • The album, "Metazoa," was recorded with and produced by Billy Anderson (NEUROSIS, MELVINS, SLEEP, PRIMORDIAL), mixed by Anderson, and mastered by Justin Weis (HAMMERS OF MISFORTUNE, LUDICRA, SLOUGH FEG).

    Metal Underground .com

  • Current revision as of 06: 20, 8 February 2010 taxonomic Kingdom Animalia (also called Metazoa heterotrophs (i.e. they rely directly or indirectly on other organisms for their nourishment).

    Conservapedia - Recent changes [en]

  • Current revision as of 06: 20, 8 February 2010 taxonomic Kingdom Animalia (also called Metazoa heterotrophs (i.e. they rely directly or indirectly on other organisms for their nourishment).

    Conservapedia - Recent changes [en]

  • Of course, above the level of the domains, Woese's thinking is (more or less) conventional evolution — the vertical descent of familiar monophyletic groups (the eukaryotes, the Metazoa, etc).

    A Disclaimer for Behe?

  • We can repeat the exercise if you like for Metazoa, Chordata, etc.

    A Disclaimer for Behe?

  • You then cited publications where Woese, Doolittle, and others, affirm their faith in the monophyly of Eukarya, Metazoa, chimps and humans, whatever.

    A Disclaimer for Behe?

  • Of course, above the level of the domains, Woese's thinking is (more or less) conventional evolution — the vertical descent of familiar monophyletic groups (the eukaryotes, the Metazoa, etc).

    A Disclaimer for Behe?

  • I then would run my ancestry lines from Chordata (3) down to Metazoa (2) and from Metazoa to the ground line (1).

    A Disclaimer for Behe?

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