What is the abbreviation for ounces?

The abbreviation for ounces is "oz," which is derived from the Italian word "oncia," meaning ounce. This abbreviation is widely recognized and used in various fields, including cooking, pharmaceuticals, and medical settings.

Understanding the correct use of abbreviations is essential in ensuring clear communication, especially in the medical field, where dosage and measurement precision is critical. The other options represent different measurements: "qt" stands for quarts, "t" typically stands for tons or teaspoons in different contexts, and "mg" refers to milligrams, which measure mass. Each of these abbreviations has its specific use, but they do not denote ounces. Therefore, "oz" is the correct and recognized abbreviation for ounces.