Definitions

1. adjective

relating to or characteristic of old age or the process of aging; declining or deteriorating with age.

“The senescent cells in the lab provided valuable insights into the aging process.”

2. noun

an organism or tissue that has entered the stage of aging or senescence, characterized by a decline in growth, function, or viability.

“The senescent cells in the culture were observed under a microscope.”

3. verb

to grow old or age, especially in a way that is marked by decline or deterioration.

“The tree’s branches began to senesce and fall off as it aged.”