The word "rhinopolypus" is a medical term used to describe a type of nasal polyp that appears in the nostrils. The spelling of this word is based on its Greek roots, rhino- meaning "nose" and -polypus meaning "growth". In IPA phonetic transcription, it is pronounced as /raɪnoʊˈpɑlɪpəs/. The combination of the silent "h" and the "p" sounds in the word can make it a challenging word to spell correctly. However, paying attention to its etymology can help remember its spelling.
A nasal polypus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.