- growing old; aging.
- Cell Biology. (of a cell) no longer capable of dividing but still alive and metabolically active.
- growing old
- characteristic of old age
n.1690s, from senescent + -ence. Related: Scenescency (1660s). adj.1650s, from Latin senescentem (nominative scenescens), present participle of senescere “to grow old,” from senex “old” (see senile). n.
- The process of growing old; aging.
- Growing old; aging.