The spelling of the word "cylindricule" is quite intricate, as it combines elements of both "cylinder" and "particle." It can be transcribed using the International Phonetic Alphabet as /sɪlɪnˈdrɪkjʊl/, with the first syllable pronounced as "sil-in" and the second syllable pronounced with a short "i" sound. The final syllable, "-ule," is pronounced with a long "u" sound, as in "cute." Overall, the intricate spelling of "cylindricule" can make it a challenging word to learn and spell correctly.
A small cylinder.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.