decimation
This term carries a heavy, catastrophic weight, evoking images of systemic collapse or widespread slaughter. While often used in modern contexts to describe any severe reduction in number, it retains a clinical, cold quality that suggests a process of elimination rather than a random accident.
Historically, the word refers to a specific Roman military discipline where a lottery determined which soldier in a group of ten would be executed. Because of this origin, the word technically implies a ten percent loss, though in contemporary usage, it is almost always used hyperbolically to mean the near-total destruction of a group.
Meanings
The act of killing or destroying a large percentage of a population or group.
The decimation of the honeybee population has alarmed ecologists.