The spelling of the word "Sadellia" can be explained through its IPA phonetic transcription. The first syllable, "Sa," is pronounced as /sæ/ with a short 'a' vowel sound. The second syllable, "del," is pronounced as /dɛl/ with a short 'e' vowel sound. Finally, the last syllable, "lia," is pronounced as /liə/ with a schwa sound followed by a long 'e' vowel sound. Therefore, the spelling of "Sadellia" reflects the sound of each individual syllable in the word.