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amortization

noun; derivation
decreasing cost over a certain time period
 
used to refer to economics and a decreasing cost
Etymology : stem of amortize late 14c., from O.Fr. amortiss-, prp. stem of amortir "deaden," from V.L. *admortire "to extinguish," from ad- "to" + mortus "dead," from L. mors (gen. mortis) "death". [OED]
Source : 11/9/2011 - MECH 472 Book – Thermal Systems Design by Wilbert Stoecker pg. 424 “If the system serves any purpose at all, it must save more money in heating costs than it requires for its own amortization and operation.”
Last modified: 2 December 2011