Syphilelcosis is a medical term used to describe a disease caused by a parasitic worm called Spirocerca lupi. The word is spelled with a combination of different sound units that represent the phonetics of its pronunciation. In IPA phonetic transcription, the word is written as /saɪfɪlˈɛlkəʊsɪs/. The first two sound units, "saɪfɪl", represent the syllables for "syphile". The following sound unit, "ɛlk", represents "elk". The last sound units "əʊsɪs" make "cosis". The overall spelling of the word helps to ensure accurate pronunciation and understanding of its meaning.