from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A taxonomic subkingdom within the kingdom Animalia — the metazoa.
from the GNU version of the Collaborative International Dictionary of English
- n.pl. 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 The Century Dictionary and Cyclopedia
- 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 WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. multicellular animals having cells differentiated into tissues and organs and usually a digestive cavity and nervous system
Sorry, no etymologies found.