mcg
n. C1 Advanced mcg
n. a very small unit of measurement used to describe the amount of a substance, like medicine or vitamins. One milligram is equal to one thousand of these.
n. a unit of mass equal to one millionth of a gram. Commonly used in the context of pharmaceuticals and nutrition to specify the dosage of a substance.
The daily dose of this vitamin is fifty mcg.
The doctor prescribed a low dose of the medication, starting at five mcg per day to see how the patient reacted.
The supplement label indicates that each capsule contains twenty mcg of vitamin B12, which is sufficient to meet the daily requirements for most adults.