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Definition of: stomodeum
(stō′mə·dē′əm, stom′ə-) noun plural ·de·a (-dē′ə) Biol.
The invagination of the ectoderm, or outer layer of the embryo, that forms the mouth. Also sto′mo·dae′um. [<NL <Gk. stoma mouth + hodaios on the way <hodos way]
—sto′mo·de′al or ·dae′al adjective
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