annihilation
词根词缀：
annihilate v. 消灭
an 加强 + nihil 无，虚无 + ate 使… → 使变没有 → 消灭
annihilation n. 消灭
an 加强 + nihil 无，虚无 + ation 行为，过程，状态，结果 → 消灭
nihil n. 虚无
nihilism n. 虚无主义
nihil 无，虚无 + ism …主义 → 虚无主义
nihility n. 无，虚无
nihil 无，虚无 + ity 具备某种性质，状况 → 无，虚无
数据来源：新东方英语词汇速记大全
相关例句：
Hence campaigns of annihilation are the means of attaining the objective of strategic attrition.
因此，战役的歼灭战是达到战略的消耗战之目的的手段。
We favour the well-being and progress, not the annihilation, of mankind.
我们祈求的是人类的幸福和进步，而不是人类的覆灭。
Quantum field theory maintains that all interactions arise from the creation and annihilation of particles.
量子场论认为，一切互相作用是由粒子的产生和湮没而引起的。
A photomagnetic positronium annihilation model was proposed to explain the experimental facts.
提出正电子素光磁湮没模型以解释实验事实。
When energy recovery at the virtual particle annihilation.
当能量恢复时虚粒子湮灭。
In the military sphere war of annihilation is of course one of the means.
而军事上的歼灭战，也是方法之一。