You can fend off taxes by holding your bonds in a retirement account or buying municipal bonds. (humbledollar.com)
The theory states there is more risk for holding a bond for 10 years than for 5 years, or for 5 years than for 90 days. (tradingonlinemarkets.com)
In other words, it is the internal rate of return of an investment in a bond if the investor holds the bond until maturity and if all payments are made as scheduled. (investopedia.com)