Definition: The state or quality of being sealed so that gas cannot escape or enter.

Example: The gastightness of the container ensures that no gas can leak out during the experiment.

Definition: A very early stage in the development of animals, where the organism is formed as a double-walled sac. This stage is thought to be a common ancestor for many living creatures, according to a theory by Haeckel.

Example: The gastraea is an important concept in understanding the evolution of complex organisms.

Definition: A medical procedure in which part or all of the stomach is surgically removed.

Example: After the diagnosis, the doctor recommended a gastrectomy to treat the patient's condition.

Definition: Relating to the stomach or its functions.

Example: The doctor explained that gastric issues can cause discomfort after eating.

Definition: A substance produced in the stomach that helps control the release of digestive juices.

Example: The doctor explained how gastrin plays a role in digestion by stimulating gastric juice production.

Definition: A condition characterized by inflammation of the stomach lining, which can be either chronic or acute.

Example: The doctor diagnosed her with gastritis after she complained of stomach pain.

Definition: This term describes something that is connected to both the stomach and the first part of the small intestine, known as the duodenum.

Example: The doctor diagnosed her with a gastroduodenal condition that required treatment.

Definition: A small stone that some animals, like reptiles and birds, swallow to help break down food in their stomachs.

Example: The dinosaur swallowed a gastrolith to help digest its tough plant diet.

Definition: Relating to a large class of animals that includes snails and slugs, which typically have a single, spirally coiled shell or no shell at all.

Example: The gastropod species found in this area are known for their unique shell shapes.

Definition: A type of mollusk that includes animals like snails and slugs, which often have a single shell or no shell at all, and a muscular foot for movement.

Example: The garden was full of gastropods, including colorful snails and slugs.

Definition: A medical instrument used to look inside the stomach by being inserted through the mouth.

Example: The doctor used a gastroscope to check for any issues in the patient's stomach.