The cause of such a fall; a critical blow or error.
A precipitous decline in fortune; death or rapid deterioration, as in status or wealth.
An act of falling down.
To fall down; deteriorate; decline.
Condition when the cell ceases to divide.
Old age; accumulated damage to macromolecules, cells, tissues and organs with the passage of time.
The state or process of ageing, especially in humans; old age.
Fruit senescence, leading to ripening of fruit.
Ceasing to divide by mitosis because of shortening of telomeres or excessive DNA damage.