The word "ZUD" is spelled as /zʌd/. It is a Mongolian term used to describe a severe winter storm that results from the collision of cold air masses from Siberia and warm air masses from the Pacific. The spelling of the word is based on the Mongolian Cyrillic alphabet which represents the sounds in the word using the letters з, у, and д. While the word may be unfamiliar to many English speakers, it is an essential part of the vocabulary for those living in Mongolia and regions affected by the ZUD.