Real Yield 

For an inflation-indexed security, the yield based on the payment stream in constant dollars, i.e., before adjustment by the index ratio.

Remarks: Bond funds including mutual funds (open-end and closed-end, actively managed and indexed), exchange-traded funds and unit investment trusts offer a convenient and affordable way to invest in a diversified portfolio of bonds, but a bond fund investment can differ from a bond investment in ways that are important to understand.