The spelling of the word "protriaene" is worth exploring, as it is not a commonly used term. Using International Phonetic Alphabet (IPA) transcription, the word can be broken down into /prəʊˈtaɪəniː/. The first two letters, "pr," indicate a consonant cluster. The following "o" is pronounced with a long vowel sound, and the "tr" and "i" are two separate consonant and vowel sounds. The second syllable is pronounced with a long "a" and an "e" sound together. Overall, the spelling reflects the word's origin in obscure scientific or technical jargon.