The name "Janissa" [dʒəˈnɪsə] is derived from the combination of the two names "Janet" and "Melissa" and has its roots in English and Greek. The spelling of the word reflects the pronunciation of the sounds in the name, with the letter "a" representing the short "ə" sound, the two "s"s representing the "s" sound, and the "i"s representing the "ɪ" sound. The phonetic transcription of "Janissa" helps to clarify the correct pronunciation of the name.