The word "Melanian" is spelled with a "M-E-L-A-N-I-A-N." It is pronounced as /mɛˈleɪniən/ according to the International Phonetic Alphabet (IPA), with the stress on the second syllable. The word is likely derived from the term "Melanesia," a subregion of Oceania that includes countries such as Papua New Guinea and Fiji. It is commonly used to refer to people from this region and can also be used to describe their cultural and ethnic characteristics. Spelling this word correctly is important in accurately conveying meaning in written communication.
There doesn't appear to be a word "Melanian" in common usage or mentioned in reputable etymological sources. Thus, there is no clear etymology to provide for this particular word. It's possible that you may be referring to a different term or word that could be investigated further.