The spelling of the word "Achromi" can be broken down using the IPA phonetic transcription. "A" is pronounced as "æ", "ch" is pronounced as "k", "r" is pronounced as "r", "o" is pronounced as "ɔ", "m" is pronounced as "m", and "i" is pronounced as "i". Therefore, the correct spelling of this word would be "Achromi" with the pronunciation /æ.kɹɔ.mi/. Achromi refers to the absence of color or pigment, particularly in the eyes.