Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Growing old; aging.
Century Dictionary and Cyclopedia
- Growing old; aging: as, a senescent beau.
Wiktionary
- adj. Growing old; decaying with the lapse of time.
- adj. characteristic of old age
GNU Webster's 1913
- adj. Growing old; decaying with the lapse of time.
WordNet 3.0
- adj. growing old
Etymologies
- From Latin senescens, present participle of senescere ("to grow old"), from senere ("to be old"), from senex ("old"). (Wiktionary)
- 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. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“Using a complex “systems biology” approach, the researchers, in conjunction with scientists from the University of Ulm in Germany, had set out to discover why cells become senescent, or, in other words, grow old.”
“Scientists are closing in on the mechanism of what are called "senescent cells," which cause the tissue deterioration responsible for aging.”
“Reporting in the journal Nature, researchers from the Mayo Clinic have found a way to clear away what are called senescent cells, which are cells that have stopped dividing and build up as people and animals age. senescent cells are so bad for the body:”
“For the first time, scientists showed in mice that removing a type of aging cell from the body that has stopped dividing -- known as a senescent cell -- can delay or prevent age-related health issues.”
The Wall Street Journal: Cell Study Finds a Way to Slow Ravages of Age
“When they get too short, the cell no longer can divide and becomes inactive or "senescent" or dies.”
WN.com - Articles related to Length of biological marker linked to cancer
“These healthy liver cells were then implanted into the livers of young rats (10 weeks, the equivalent of young adulthood) and "senescent" rats (more than 35 weeks).”
“Even when he was senescent and behaving erratically, he still intimidated people.”
“Extensive research is still necessary to test whether the clearance of senescent cells would have the same effect in mice that age normally and whether there are different effects in different tissues, such as the brain as compared with muscle tissue, said Dr. Sierra of the National Institute on Aging.”
The Wall Street Journal: Cell Study Finds a Way to Slow Ravages of Age
“Researchers at the Mayo Clinic in Rochester, Minn., found for the first time that by using a drug to target and kill senescent cells, they could essentially freeze some aspects of the aging process.”
The Wall Street Journal: Cell Study Finds a Way to Slow Ravages of Age
“If you could clear senescent cells, you perhaps could treat age-related diseases as a group rather than individually," said Jan van Deursen, senior author of the paper and a professor in the departments of biochemistry and pediatric and adolescent medicine at Mayo.”
The Wall Street Journal: Cell Study Finds a Way to Slow Ravages of Age
Lists
These user-created lists contain the word ‘senescent’.
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Words
phantasmagoria, eviscerate, avast, simulacrum, varicose, oblique, gestalt, ersatz, vernal, vivace, stellate, synecdoche and 321 more...
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Interesting words
A list of words that are odd or words that I have looked up.
concupiscence, brize, scree, scoria, forestaff, spanaemia, valetudinarianism, distasture, pyrethrum, laudanum, gentian, bicameral and 11184 more...
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phrontistery-s
from phrontistery.info
sabaton, sabbatarian, sabbulonarium, sabelline, sabin, sable, sabliere, sabot, sabretache, sabulous, saburration, saccade and 1593 more...
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Logolepsy
"Luciferous Logolepsy is a collection of over 9,000 obscure English words. Though the definition of an 'English' word might seem to be straightforward, it is not. There exist so many adopted, deriv...
Anschauung, Areopagus, Argus, Briarean, Dei gratia, Dei judicium, Deo volente, Duecento, Foehn, Geflugelte Worte, Gegenschein, Hakenkreuz and 9230 more...
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Proustian -escent words
Proust (or Montcleiff) had a proclivity for the rhythm and tone of this sort of word. Help build the collection if you can.
Also, Transvertebration; can anyone define it? It's more o...senescent, opalescent, arborescent, efflorescent, deliquescent, effervescent, recrudescent, iridescent, somnolescent, convalescent, incandescent
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Illuminated Manuscript
words for the bespoke
midheaven, moth-fly, yea-forsooth, ontil, coxcomb, vulnerary, landhelgisgæslan, beasthood, deviltry, triolet, diablerie, titil and 107 more...
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Words I Want To Master
Words I know... but can never seem to remember while speaking or writing!
unfettered, nebulous, elude, vapid, precipitous, abscond, venerate, voracious, replete, laconic, denigrating, unctuous and 23 more...
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List Erine
cool mint antiseptic
shalom, cattywampus, bourgeoisie, aerophile, traverse, grotto, epicurean, ex cathedra, nautilus, epitaph, lathe, continuum and 753 more...
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artoparts's Words
illation, finite, edify, abide, abrade, vouch, amiss, vociferate, perusing, techantiquery, rigamarole, holon and 615 more...
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madamepsychosis's Words
mollify, salubrious, prandial, coup de grace, ineluctable, metempsychosis, pedant, conatus, oeuvre, laconic, solipsism, vapid and 265 more...
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The Collection
A somewhat discriminatory list of words and phrases collected for their euphonic or arcane appeal, interesting etymology, or concise definition of an otherwise unnamed phenomenon or concept.
ziggurat, neophilia, sucker punch, soporific, epoch, tundra, fiat, idiotproof, miscellany, metaphysics, cryptozoology, dysphoria and 850 more...
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Monovocalics
Words that have only one of the vowels. On this list I include only words with at least three vowels. When I first started the list, if a word had several forms, I generally listed only the one wit...
syzygy, mirific, cumulus, homolog, monocot, bedewed, jezebel, referee, bikini, minikin, locomotor, terebenthene and 2359 more...
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Vocalublary Awareness
Words I need to use more to increase my vocabulary.
incredulous, prolific, ubiquitous, egregious, aplomb, resilience, persevere, punctilious, perspicacious, inordinate, articulate, enunciate and 199 more...
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Verbal Advantage List
ostensible, paraphrase, digress, uncanny, candor, morose, adept, saturated, pragmatic, congenial, capricious, blatant and 487 more...
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5-0
Hecko, words! I’m so happy I’ve found you. I want to keep you all and never want to lose you again. I hope you like it here.
amscray, thistledown, tine, tinsel, pungent, snarl, wail, lanky, viscid, dawdle, luminous, stow and 2719 more...
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conglomeration
wherewithal, wan, zoonotic, zoonosis, nebulous, nefarious, nascent, quiescent, quell, undercroft, unwitting, unutterable and 658 more...
Tweets
Looking for tweets for senescent.

DiamondJuneau I like this word.. Apr 3, 2012