Decay

Decay may refer to:

Science and technology

• Bit decay, in computing
• Decay time (fall time), in electronics
• Distance decay, in geography
• Software decay, in computing

Biology

• Decomposition of organic matter
• Mitochondrial decay, in genetics
• Tooth decay (dental caries), in dentistry

Physics

• Optical decay, in quantum physics
• Orbital decay, the process of prolonged reduction in the height of a satellite's orbit
• Particle decay
• Radioactive decay
• False vacuum decay

Mathematics

• Exponential decay

Psychology and sociology

• Decay theory, in psychology and memory
• Social decay (decadence), in sociology
• Urban decay, in sociology

Entertainment

• Network decay (channel drift), in television programming
• Decay (DC Comics), a comic book character
• Decay (comics), a Marvel Comics character and member of the Acolytes
• Decay (X-Factor), a Marvel Comics character and member of Serval X-Factor
• ', a 2001 video game add-on
• Deekay, a Danish production team
• Decay (professional wrestling), a professional wrestling stable in TNA Wrestling