Pionemia is a medical term used to describe the presence of a high number of pions in blood. The word is pronounced as /paɪəʊˈniːmɪə/, with the stress on the second syllable. The first syllable in the word is pronounced like "pie" with an 'o' sound in the middle. The 'n' in the middle of the word is pronounced with a nasal sound. The final syllable is pronounced like "mee-uh." The spelling of Pionemia is derived from the Greek word 'piein', which means to purify, and the suffix 'emia,' which means blood condition.