Voluminosities is a noun used to describe something that is bulky, large or heavy. The word is spelled with four syllables, starting with "vo" and ending with "ties". The "o" in "vo" is pronounced with a long vowel sound, followed by the "lu" which is pronounced with a short vowel sound. The "mi" is pronounced with a long vowel sound, followed by the "no", which is pronounced with a short vowel sound. Finally, the "si" is pronounced with a soft "sh" sound, and the word ends with a strong "teez" sound.