Disappearance or extinction; the act or process of ceasing to exist or of being extinguished.
古い習慣が産業化によって消滅した。
Old customs disappeared due to industrialization.
誤ってデータが消滅してしまったので、バックアップから復元した。
The data was accidentally lost, so I restored it from a backup.
長年の風化で記念碑の文字がほとんど消滅した。
After years of weathering, the inscriptions on the monument have mostly vanished.
(Physics) annihilation — the process in which particles (or other entities) are destroyed or converted, such as particle-antiparticle annihilation.
電子と陽電子の消滅によってガンマ線が放出される。
Gamma rays are emitted when an electron and a positron annihilate.
理論物理では、一対の粒子の消滅過程を詳しく計算する。
In theoretical physics, the annihilation process of particle pairs is calculated in detail.