The word “pronunciation” is pronounced as /prəˌnʌn.siˈeɪ.ʃən/ in the International Phonetic Alphabet (IPA). Here’s a simplified guide to help with the pronunciation:
pro-nun-see-AY-shun
The stress is on the third syllable, indicated by the capital letters “AY.” The “u” in “pronunciation” is pronounced as “uh,” and the “o” in “pronounce” is pronounced as a short “o” sound.