How do you spell Mesoderm 

Available Definitions:
1)  n. - The layer of the blastoderm, between the ectoderm and endoderm; mesoblast. See Illust . of Blastoderm and Ectoderm.
2)  n. - The middle body layer in some invertebrates.
3)  n. - The middle layer of tissue in some vegetable structures.





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