The word "triella" is spelled with three syllables: /triːɛlə/. The first syllable is pronounced with a long "e" sound and the second syllable is pronounced with a short "e" sound. The third syllable ends with the schwa sound, which is the most common vowel sound in the English language. The spelling of "triella" follows the general rules of English phonetics, with each letter representing a corresponding sound. Overall, the phonetic transcription of "triella" helps to unravel the correct spelling of this word.