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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 researchers found that senescent cells had higher levels of GATA4 than normal cells and that producing the protein in human connective tissue cells turned the cells senescent.
In a final, senescent stage, the beetle stops feeding, and its weight continually declines until death occurs at about 40% of its emergent mass.
It's well known that negligibly senescent animals, such as naked mole rat, do not show signs of functional decline or any increase of mortality with age.
Furthermore, the most prominent age-dependent change in secondary lymphoid tissues is the accumulation of senescent cells, which can modify immune function and tissue structure.
Another WCMC-Q team project titled 'Validation and Functional Characterisation of Novel Factors in Senescent 3T3-L1 Pre-adipocytes' won third prize.
Researchers such as James Kirkland, director of the Mayo Clinic's Robert and Arlene Kogod Center on Aging, suggest that cells stop dividing and become senescent as a way to prevent them from being cancerous.
To make matters worse, excess numbers of senescent memory cells provoke undesirable inflammatory reactions (17-21) that are thought to underlie most age-related diseases including atherosclerosis, cancer, and dementia.
The research is an important one, as it helps to identify the accumulation of senescent cells, or old cells, in human tissues, which is a factor in the symptoms of ageing.
Another product is Unflamagyl, which is rich in yeast biopeptides to regulate communication between senescent cells and their environment.
The process of being senescent is better known as what?
This book promotes the development and maintenance of optimal physical, mental, and social functioning, irrespective of acquired disease and with due recognition of the senescent changes that ac company late life.