stomodeum

(redirected from stomodaea)
Also found in: Dictionary.

stomodeum

 [sto″mo-de´um]
the ectodermal depression at the head end of the embryo, which becomes the front part of the mouth.

sto·mo·de·um

(stō'mō-dē'ŭm),
1. A midline ectodermal depression ventral to the embryonic brain and surrounded by the mandibular arch; when the buccopharyngeal membrane disappears, it becomes continuous with the foregut and forms the mouth. Synonym(s): stomatodeum
2. The anterior portion of the insect alimentary canal, consisting of mouth, buccal cavity, pharynx, esophagus, crop (frequently a diverticulum), and the proventriculus.
[Mod. L. fr. G. stoma, mouth, + hodaios, on the way, fr. hodos, a way]

stomodeum

/sto·mo·de·um/ (sto″mo-de´um) an invagination of the surface ectoderm of the embryo, at the point where later the mouth is formed.stomode´al

stomodeum

also

stomodaeum

(stō′mə-dē′əm)
n. pl. stomo·dea also stomo·daea (-dē′ə)
The anterior or oral portion of the digestive tract of an embryo.

sto′mo·de′al (-dē′əl) adj.

stomodeum

[stom′ədē′əm] pl. stomodeums, stomodea
Etymology: Gk, stoma + odaios, a way
a depression in the ectoderm located in the foregut of the developing embryo that forms the mouth. Also spelled stomadaeum, stomadeum, stomodaeum. Compare proctodeum. stomadeal, stomodaeal, stomodeal, adj.

sto·mo·de·um

, stomatodeum (stō'mō-dē'ŭm, -mă-tō-dēŭm)
1. A midline ectodermal depression ventral to the embryonic brain and surrounded by the mandibular arch; when the buccopharyngeal membrane disappears, the stomodeum becomes continuous with the foregut and forms the mouth.
2. The anterior portion of the insect alimentary canal.
[Mod. L. fr. G. stoma, mouth, + hodaios, on the way, fr. hodos, a way]

sto·mo·de·um

, stomatodeum (stō'mō-dē'ŭm, -mă-tō-dēŭm)
A midline ectodermal depression ventral to the embryonic brain and surrounded by the mandibular arch; when the buccopharyngeal membrane disappears, the stomodeum becomes continuous with the foregut and forms the mouth.
[Mod. L. fr. G. stoma, mouth, + hodaios, on the way, fr. hodos, a way]

stomodeum (sto″mode´əm),

n a superficial depression on the ectoderm of the developing embryo that later becomes the oral cavity; primitive mouth.

stomodeum, stomodaeum, stomatodaeum, stomatodeum

the ectodermal depression at the head end of the embryo, which becomes the front part of the mouth.