metazoa
Metazoa is a 7 letter word which starts with the letter M and ends with the letter A for which we found 1 definitions.
| Definition |
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| (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. |
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