The time remaining until a financial contract (bond) expires. Consider a 30 year bond maturity being resold in year 20 (of the bond life) What is the yield to maturity would need to be asked before being purchased.

Premium gift for you for registering for my newsletter
I am a member of Syndicated Columnists, a national organization committed to a fully transparent approach to money.
Interested in additional information? Register for my FREE bi-monthly newsletter, "Layin' it on the line." It contains information that other people have found beneficial. I will never sell your information.
For registering, I have a Premium Gift for you.
Our 15th edition, “Safe Money Book” a $20 value
77,000 copies in circulation
Learn the basics of a Safe Money approach to investing.
And it is FREE with your "Layin' it on the line" newsletter