senescent Meaning, Definition & Usage

  1. adjective satellite growing old
    aging; ageing.

WordNet

Se*nes"cent adjective
Etymology
L. senescent, p. pr. of senescere to grow old, incho. fr. senere to be old.
Definitions
  1. Growing old; decaying with the lapse of time. "The night was senescent." Poe. "With too senescent air." Lowell.

Webster 1913