1. the process of growing old or aging
Usage: formal; biological
2. the condition or process of deterioration with age
Usage: scientific

Examples

• The study examined cellular senescence in laboratory mice.
• Plant senescence occurs naturally as leaves age and fall.
• Researchers are investigating ways to slow human senescence.
• The tree showed signs of senescence with yellowing leaves.
• Cellular senescence plays a role in cancer prevention.
• Scientists study senescence to understand the aging process.