1. complete destruction or elimination of something
2. the state of being completely destroyed or wiped out
3. the conversion of matter and antimatter into energy
Usage: physics

Examples

• The nuclear war threatened the annihilation of all life on Earth.
• The hurricane caused the complete annihilation of the coastal town.
• Scientists study the annihilation of particles and antiparticles.
• The army’s goal was the total annihilation of enemy forces.
• The company faced financial annihilation after the scandal.
• When matter meets antimatter, annihilation occurs and releases energy.