The correct spelling of the word "vesicae" is challenging for many people. This word refers to the plural form of "vesica," which means a bladder or sac. The IPA phonetic transcription of "vesicae" is /vɛˈsɪki.ˌi/. The tricky part is the ending "ae," which is the Latin plural of "a." The spelling "vesicae" is used instead of "vesicas" to indicate the concept of multiple bladders or sacs. So next time you encounter this word, remember to use the Latin plural form and spell it correctly!