COMMERCIAL PAPER: Short-term negotiable financial instruments, or promissory notes, sold by corporations to raise working capital. The maturity length of commercial paper is less than a year, often 30, 60 or 90 days. The corporations who issue commercial paper are usually the largest, most stable, and most profitable businesses in the country. See also | money market | Treasury bill | promissory note | corporation | corporate bond | blue chip | financial markets | interest rate | investment | capital | capital market |