gastrophryne carolinensis
- n small toad of southeastern United States
gastrophryne olivacea
- n small secretive toad with smooth tough skin of central and western North America
gastropod
- n a class of mollusks typically having a one-piece coiled shell and flattened muscular foot with a head bearing stalked eyes
gastroscope
- n a type of endoscope for visually examining the stomach
gastroscopy
- n visual examination of the stomach by means of a gastroscope inserted through the esophagus
gastrostomy
- n surgical creation of an opening through the abdominal wall into the stomach (as for gastrogavage)
gastrula
- n double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm
gastrulation
- n the process in which a gastrula develops from a blastula by the inward migration of cells