The term IV is used in a variety of contexts. The crossword solutions for the term IV are DRIP (4 letters), FOUR (4 letters), and DRIPFEED (8 letters). DRIP stands for Dividend Re-Investment Plan, which is a way for investors to reinvest their dividends back into the company they are investing in. FOUR is simply the number four. DRIPFEED is a method of delivering content over a period of time, usually in small amounts. This can be used to slowly introduce new information or products to customers.