say it: suh-NES-uhns
senescence is a noun meaning "the organic process of growing older and showing the effects of increasing age". It carries 2 recorded senses.
the organic process of growing older and showing the effects of increasing age
the property characteristic of old age
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for senescence come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.