- 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.
- 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]
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.