The word "Kabivitrum" is an uncommon word that is pronounced /kæ'biːvɪtrəm/. The first part of the word, "Kabi," is pronounced with a short "a" sound, followed by a long "e" sound. The second part of the word, "vitrum," is pronounced with a short "i" sound, followed by the stressed "u" sound, and finally the "trum" syllable is pronounced with a quick "t" and "r" sound, and a soft "u" sound. Overall, the unique blend of these sounds creates a distinctive pronunciation of "Kabivitrum."