What does 'gtt' stand for in dosage measurements?

In dosage measurements, 'gtt' stands for 'drop.' This abbreviation is derived from the Latin word 'gutta,' which means drop. In medical and pharmaceutical contexts, it is commonly used to describe the volume of liquid medication administered, especially when precise dosing is critical, such as in pediatric or ophthalmic medications. Understanding this abbreviation is important for healthcare professionals to accurately measure and dispense medications, ensuring patients receive the correct amount.

In contrast, the other terms—grain, gallon, and teaspoon—represent different units of measurement and do not convey the same meaning as 'gtt.' A grain is a unit of weight, a gallon measures volume in liquid form, and a teaspoon is a standard measure used in cooking and dosing, but none of them refer specifically to drops.