Deperdition

Part of speech: noun

Definitions

1. The process of losing or wasting away gradually, especially referring to the dissipation of heat, energy, or other resources from a system
2. The gradual dissipation or loss of energy, heat, or matter from a system through various means
3. A wasting away or diminishment of substance, force, or value occurring slowly over time

Etymology: "Deperdition" came into English from Middle French "déperdition," and it has kept the sense the French word had from the start: a slow loss, a leaking away of something valuable. Its Latin ancestor, "deperditio," is built from "de-," meaning "away" or "down," and "perditio," a noun meaning destruction or ruin, the same root that gives English "perdition." The English word therefore carries a faint trace of its root's sense of being lost or ruined, though in practice it is used for a gentler, more gradual kind of decline. The word is most often found in technical settings, where it describes a measurable drain rather than a dramatic collapse. Its usage has stayed narrow, which is one reason it sounds more specialised than its parts would suggest.