Final answer:
The correct spelling is 'dialysis,' which is a medical term referring to a treatment process for kidney failure.
Step-by-step explanation:
The term with the correct spelling among the options provided is dialysis. Dialysis is a medical process used primarily to treat kidney failure by removing excess water, solutes, and toxins from the blood. When selecting the correct spelling of a word, it can be helpful to break the word down into its component parts or stems, as well as familiarize yourself with suffix patterns, which can provide clues about the correct spelling. For example, the suffix 'ysis', which means 'the process of', is a common ending in medical terms like dialysis, making it distinct from the misspelled variants provided.