The word "atroa" is an incorrect spelling. There is no known word in English that is spelled with this combination of letters. However, if we consider this as a made-up word, we can break it down phonetically using the International Phonetic Alphabet (IPA). The spelling would then be /ə.tɹoʊ.ə/ with each symbol representing a specific sound in the word. This phonetic transcription can help us better understand and communicate the pronunciation of the word, whether it's real or not.