The meaning of SENESCENT is relating to, characterized by, or associated with the state of being old or the process of aging : marked by or undergoing senescence.

SENESCENT definition: growing old; aging. See examples of senescent used in a sentence.

A distinction between healthy, activated microglia and dysfunctional, senescent cells is crucial when considering future approaches to maintain brain health and treat neurodegenerative disease.

Define senescent. senescent synonyms, senescent pronunciation, senescent translation, English dictionary definition of senescent. adj. 1. Growing old; aging. 2. No longer dividing. Used of a cell. …

Jan 23, 2026 · Adjective senescent (comparative more senescent, superlative most senescent) Growing old; decaying with the lapse of time.

Definition of senescent adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

senescent in American English (səˈnɛsənt ) adjective Origin: L senescens, prp. of senescere, to grow old < senex, old: see senate growing old; aging

From Latin senescere (to grow old), from senex (old). Ultimately from the Indo-European root sen- (old), which is also the ancestor of senior, senate, senile, Spanish señor, sir, sire, and surly (which is an …

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Growing old; aging: as, a senescent beau. from the GNU version of the Collaborative International Dictionary of English. adjective Growing old; decaying with the lapse of time. from Wiktionary, …