An early stage in the development of anything.
The state of being a minor.
The state of being an infant.
The earliest period of childhood (crawling rather than walking).
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.
Condition when the cell ceases to divide.