What is the abbreviation for a grain?

The abbreviation for a grain is "gr." or simply "gr." This abbreviation comes from the Latin word "granum," which means grain. In medication dosage, it is important to understand these abbreviations as they relate to the weight of medications, particularly when dosing with solid forms such as tablets or powders.

Using "gr." indicates to healthcare professionals that the measurement pertains to grains, which is a traditional unit of measure commonly used in pharmacy and medicine, especially in the context of older medications. Understanding these units is crucial for ensuring proper medication administration and patient safety.

The other abbreviations serve different purposes: "g" or "gm" refers to grams, "cc" is commonly used for cubic centimeters, and "gtt." stands for drops. Each of these units is used in various contexts, but when discussing grains specifically, "gr." is the correct abbreviation.