The spelling of the name "Jilliann" is quite unique and can be a bit tricky to pronounce correctly. The pronunciation is typically written as jɪliən, with the stress on the first syllable. The initial "J" is pronounced as the "dzh" sound, like in the word "jam." The following "I" sounds like the "ih" in "sit." The double "L" is pronounced as a double "L" sound. Finally, the ending "-iann" is pronounced as "ee-ann" with the stress on the second syllable.
The name "Jilliann" does not have a clear etymology as it is a fairly modern name with no widely recognized historical or cultural origins. It appears to be a variation of the more common name "Jillian" which is derived from the male name "Julian" or "Julius". Both "Julian" and "Julius" have Roman origins and are believed to be derived from the Roman family name "Julius" which may have been derived from the Greek name "Ioulos" meaning "downy-bearded" or "youthful". However, it is important to note that the etymology of names can be complex and various factors like cultural influences, personal preference, or simply invented variations can contribute to the creation of new names.