[stoh-muh-dee-uhm, stom-uh-]
noun, plural stomodea [stoh-muh-dee-uh, stom-uh-] . Embryology.
a depression in the ectoderm of the oral region of a young embryo, which develops into the mouth and oral cavity.

1875–80; < Neo-Latin < Greek stóm(a) stoma + hodaîon (neuter singular) on the way; akin to -ode2

stomodeal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
stomodaeum or stomodeum (ˌstəʊməˈdiːəm, ˌstɒm-, ˌstəʊməˈdiːəm, ˌstɒm-)
n , pl -daea, -dea
the oral cavity of a vertebrate embryo, which is formed from an invagination of the ectoderm and develops into the part of the alimentary canal between the mouth and stomach
[C19: from New Latin, from Greek stoma mouth + hodaios on the way, from hodos way]
stomodeum or stomodeum (ˌstəʊməˈdiːəm, ˌstɒm-, ˌstəʊməˈdiːəm, ˌstɒm-, -ˈdiːə)
[C19: from New Latin, from Greek stoma mouth + hodaios on the way, from hodos way]
stomo'daeal or stomodeum
stomo'deal or stomodeum

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American Heritage
Medical Dictionary

stomodeum sto·mo·de·um (stō'mə-dē'əm)
A midline ectodermal depression ventral to the embryonic brain and surrounded by the mandibular arch. It becomes continuous with the foregut and forms the mouth.

sto'mo·de'al adj.
The American Heritage® Stedman's Medical Dictionary
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