1. Noun
The layer of the blastoderm, between the ectoderm and endoderm; mesoblast. See Illust. of Blastoderm and Ectoderm.
2. Noun
The middle body layer in some invertebrates.
3. Noun
The middle layer of tissue in some vegetable structures.
4. Noun
the middle germ layer that develops into muscle and bone and cartilage and blood and connective tissue
Vocabulary classified under Nature and environment
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