The spelling of the word "Nadea" can be explained using IPA phonetic transcription as "nəˈdeɪə". The first syllable "na" is pronounced with the schwa sound "ə" and the "n" sound. The second syllable "dea" is pronounced with a stress on "de" which is pronounced with the "d" sound and the "ee" sound, followed by a schwa "ə" sound for the final "a". Overall, the spelling of the word "Nadea" accurately reflects its pronunciation using IPA phonetic transcription.
I apologize, but I couldn't find any reliable and accurate information about the term "Nadea" to provide a dictionary definition. It's possible that "Nadea" may be a less common or specialized term, a name, or a term referring to a specific entity or concept within a specific context. If you could provide more information or clarify the context in which you are referring to "Nadea," I would be happy to assist you further.