Medicinal Measure is a term used to describe the amount of medicine that is prescribed to a patient. DOSE, with 4 letters, is the amount of medicine taken at one time. DOSAGE, with 6 letters, is the total amount of medicine taken over a period of time. DROP, with 4 letters, is the amount of liquid medicine taken at one time. All three terms are used to describe the amount of medicine that is prescribed to a patient.