Correct spelling for the English word "OMUS" is [ˈɒməs], [ˈɒməs], [ˈɒ_m_ə_s] (IPA phonetic alphabet).
I apologize, but I couldn't find any specific dictionary definition for "OMUS." It appears that "OMUS" may not be a widely recognized term or acronym in common dictionaries. It is possible that "OMUS" could be a proper noun, acronym, abbreviation, or a term from a specific domain, such as a company name, organization, location, or jargon from a particular field. Without further context or information, it is difficult to provide an accurate definition.
If you could provide more details about the term or its context, I would be happy to assist you in providing a definition or explanation.