The spelling of the word 'hemastatical' is derived from the medical term 'hemostatic'. It is pronounced /hiːməˈstætɪkəl/. The word refers to something that stops or prevents bleeding. The suffix 'ical' is added to the base word 'hemastatic' to transform it into an adjective. It is not a commonly used word and may be unfamiliar to many people. However, it is important to understand medical terminology, and the correct spelling of related terms to facilitate effective communication between patients and healthcare providers.