The correct spelling of the first book of the Bible is Genesis, not Gennesiss. The word Genesis comes from the Greek word "genesis," meaning origin or birth. The correct pronunciation of the word Genesis is [je·nə·sɪs], with emphasis on the second syllable. The IPA phonetic transcription for Genesis is /ˈdʒɛnəsɪs/. While spelling mistakes can be common, it's important to use the correct spelling and pronunciation to avoid confusion and misunderstandings.
The term "Gennesiss" does not have an established etymology, as it appears to be a misspelling or a nonexistent word. It bears some similarity to the word "Genesis", which originates from the Greek word "genesis" (γένεσις), meaning "origin", "creation", or "birth". In religious contexts, "Genesis" refers to the first book of the Bible, which describes the creation of the world and other significant events. However, the word "Gennesiss" does not possess a defined etymology or meaning.