The word "epicyst" refers to a cyst that is located on a certain organ. The spelling of this word can be explained using the International Phonetic Alphabet (IPA). It is pronounced /ɛpɪsɪst/. The initial "e" is pronounced as the short "e" sound, followed by the "p" sound, and the "ɪ" sound. The next syllable is pronounced as "sɪst", with a short "i" sound followed by "s" and "t". So, the correct spelling of the word "epicyst" is phonetically represented by /ɛpɪsɪst/.