The spelling of the word "Mussulmanism" can be confusing, as the word is not commonly used in modern language. However, the correct spelling includes two "s"s and an "i" in the second syllable, making it pronounced "MUHS-suhl-muh-niz-uhm", according to IPA phonetic transcription. The word refers to the Muslim faith and its beliefs and practices. Though considered outdated by many, it is important to understand the history of language and terminology surrounding religion and culture.
The word "Mussulmanism" is an obsolete term used in the past to refer to Islam or the religious practices of Muslims. Its etymology can be traced back to the Arabic word "Muslim" (مُسْلِم), which means "one who submits (to God)" or "follower of Islam". The term "Mussulmanism" was formed by adding the suffix "-ism" (from the Greek "-ismos") to "Mussulman", an old-fashioned English variant of "Muslim". However, it is important to note that the term "Mussulman" and its derivatives have fallen out of favor and are considered outdated and potentially offensive nowadays. It is recommended to use the term "Muslim" or "Islam" when referring to the religion or its followers.