The name Marinna is a unique spelling of the name Marina. It is pronounced as /məˈrinə/. The first syllable "ma" is pronounced as "ma" in "man," followed by "rin" which sounds like "rin" in "ring." The last syllable "na" is pronounced as "na" in "nanny." The double "n" in the name indicates that the emphasis should be on the second syllable. Although this spelling may be less common compared to Marina, it adds a personal touch to the name.
There does not seem to be a widely recognized etymology or origin for the word "Marinna". It appears to be a relatively uncommon name that does not have a clear historical background or linguistic roots. It is possible that "Marinna" could be a variant or derivative of other names, such as Marina, which comes from the Latin word "marinus" meaning "of the sea". However, the specific etymology of "Marinna" remains uncertain.