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1. Growing old; aging.
2. No longer dividing. Used of a cell.

[Latin senēscēns, senēscent-, present participle of senēscere, to grow old, inchoative of senēre, to be old, from senex, sen-, old; see sen- in Indo-European roots.]

se·nes′cence n.


1. growing old
2. characteristic of old age
[C17: from Latin senēscere to grow old, from senex old]
seˈnescence n


(sɪˈnɛs ənt)

growing old; aging.
[1650–60; < Latin senēscent-, s. of senēscēns, present participle of senēscere to grow old, derivative of senex, s. sen- old; see -escent]
se•nes′cence, n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.senescent - growing oldsenescent - growing old        
old - (used especially of persons) having lived for a relatively long time or attained a specific age; "his mother is very old"; "a ripe old age"; "how old are you?"


adj (form)alternd
References in classic literature ?
And now, as the night was senescent, And star-dials pointed to morn -- As the star-dials hinted of morn -- At the end of our path a liquescent And nebulous lustre was born, Out of which a miraculous crescent Arose with a duplicate horn -- Astarte's bediamonded crescent, Distinct with its duplicate horn.
The company's initial focus is on creating senolytic medicines to selectively eliminate senescent cells and thereby treat age-related afflictions such as osteoarthritis, atherosclerosis, eye diseases, and kidney disease.
Senescent patients are opting for aromatherapy for management of chronic pain along with conventional therapeutics, the study points out.
As previously reported, SKs are composed of hyperadherent senescent cells that are arrested in the G1 phase of the cell cycle.
Other therapeutic areas such as neurostimulation devices market for Parkinson's disease, epilepsy, gastric conditions are also anticipated to undergo impressive growth rate during the forecast period on the ground of improved treatment efficiency, rising disease prevalence in the senescent population base and continuous product innovations.
Previous studies have reported that the activity of SA-[sz]-Gal is a marker for identifying senescent RPE cells and that subtoxic oxidative stress-induced SA-[sz]-Gal activity confirmed the presence of senescent RPE cells.
A team led by Professor Lorna Harries, Professor of Molecular Genetics at the University of Exeter, has discovered a new way to rejuvenate inactive senescent cells.
The older we are, the more of these senescent cells we accumulate.
Once mature, red cells become senescent or old, these cells become trapped in the sinusoids of the spleen and are broken down.
Cardiac and systemic rejuvenation after cardiosphere-derived cell therapy in senescent rats," European Heart Journal, 2017; DOI: 10.
The quiescence-to-senescence-switch in aging muscle stem cells: tracing and isolating senescent stem cells in senescence-cell reporter mice during aging / impact of senescent cell ablation on regenerating aged muscle.