Penetralla is a made-up word, but it is derived from the English language. The spelling of Penetralla can be broken down into several phonetic symbols: /pɛnɪˈtrælə/. Each symbol represents a unique sound or combination of sounds that come together to form the word. The 'p' and 'n' sounds are followed by a short 'e' sound, while the 'tr' sound is blended together with the 'a' sound. The final syllable has a long 'a' sound followed by a short 'ə' sound. Overall, the spelling of Penetralla follows the rules of English phonetics.