The term 'Potion Portion' can be broken down into two crossword solutions: 'DOSAGE' (6 letters) and 'DOSE' (4 letters). DOSAGE is a noun that refers to the amount of medicine or drug prescribed to be taken at one time, while DOSE is a noun that refers to the measured quantity of a medicine, drug, or vitamin that is taken at any one time. Both terms are related to the medical field and are used to describe the amount of a substance that is taken at one time.