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half-life

   Also found in: Dictionary/thesaurus, Medical, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
Half-life
The point in the life of a mortgage-backed security guaranteed or issued by the Government National Mortgage Association, the Federal National Mortgage Association or the Federal Home Loan Mortgage Corporation when half the principal has been repaid.
half-life
The length of time before half the principal on a debt is expected to be repaid through amortization or sinking fund payments. For example, a 25-year bond issue may require the issuer to retire 5% of the beginning principal commencing 5 years after the issue date. Thus, the bond issue has a half-life of 5 years plus the number of years required to retire half the issue, or 15 years. Mortgage-backed securities often have a relatively short half-life because many homeowners pay off or refinance their mortgages early. Also called average life.


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This Half-Life technique works so well that I use it for all my own presentations and workshops - and it''s become a verb, as in "Half-Life my presentation" or "Half-Life my slides.
Public Speaking Using Improv Comedy's "Half-Life" Technique to Speak ... by Gilda Bonanno / Business community
Journal cited half-life can be understood as an indicator of the continued importance of past contributions (Cartwright & McGhee, 2005; Della Sala & Crawford, 2007).
Occupational therapy and the Journal Citation Reports: 10-year ... by Holguin, Jess Anthony / AJOT: American Journal of Occupational Therapy
The half-life of fluoxetine after a single dose is two days and, after multiple dosing, four days.
Things You Should Know before Taking Fluoxetine by Heather Colman / Health care industry community
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