The crossword solution for the term 'Prefix with PRESENT or POTENT' is OMNI. The prefix OMNI- is derived from Latin and means 'all' or 'EVERY'. It is commonly used in English to refer to something that is all-encompassing or universal. For example, an omnipresent being is one that is PRESENT everywhere, and an omniscient being is one that knows everything. When combined with the words 'PRESENT' or 'POTENT', OMNI- can be used to describe something that is all-PRESENT or all-powerful.