The spelling of "OM CDER" may seem confusing at first glance, but its pronunciation can be deciphered using the International Phonetic Alphabet (IPA). The "OM" is pronounced as "ɑm" with a long "a" sound, while "CDER" is pronounced as "sider" with a soft "s" sound. Together, the word is pronounced as "ɑm-sider", which has no clear meaning in English. It is possible that this is a made-up word or a term from a different language.