(usually uncountable, plural senescences)
- (biology) The state or process of ageing, especially in humans; old age.
- (cell biology) Ceasing to divide by mitosis because of shortening of telomeres or excessive DNA damage.
- (gerontology) Old age; accumulated damage to macromolecules, cells, tissues and organs with the passage of time.
- (botany) Fruit senescence, leading to ripening of fruit.
From Latin senescere (“to grow old").