an.ni.hi.la.tion
n.（名词）
The act or process of annihilating.歼灭，消灭，毁灭：消灭的行为或过程The condition or result of having been annihilated; utter destruction.毁灭，覆没：被消灭的状态或结果；完全毁灭Physics The phenomenon in which a particle and an antiparticle, such as an electron and a positron, meet and are converted completely to energy approximately equivalent to the sum of their masses.【物理学】 湮灭，湮没：一种物理现象，一个粒子和它的反粒子，如一个负电子与一个正电子相遇时，转化为与粒子总能量大约相等的能量
