summing up an abbreviation is a shortening of a word or a phrase an acronym is an abbreviation that forms a word an initialism is an abbreviation that uses the first letter of each word in the phrase thus some but not all initialisms are acronyms
ROI, or return on investment, is a common business term used to identify past and potential financial returns. Managers and executives look to the ROI of a project or endeavor because this indicates how successful a venture will be.
Return on Investment (ROI) - This is how much would you make if you sold all of that product at your asking price subtracted by the total cost for ordering that merchandise.For example, if you ordered 100 shirts for $500 and sold them for $20 each, your return on investment would be $1500.