A hiatal hernia occurs when the upper part of your stomach pushes up through your diaphragm and into your chest region. The diaphragm is a large muscle that lies between your abdomen and chest. You use this muscle to help you breathe. Normally, your stomach is below the diaphragm, but in people with a hiatal hernia, a portion of the stomach pushes up through the muscle. The opening it moves through is called a hiatus. This condition mostly occurs in people who are over 50 years old.
A commodity generally refers to an agricultural product that is bought and sold such as corn, coffee, wheat, etc. Energy commodities include gas, electricity, oil, etc.
1. a thing produced by labor: farm products. 2. the totality of goods or services that a company produces. 3. material created or produced and viewed in terms of potential sales: an artist who provided dealers with reliable product. 4. a person or thing seen as resulting from a process, as a social or historical one: He is a product of his time.