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senescence

1 ENTRIES FOUND:
senescence /sɪˈnɛsn̩s/ noun
senescence
/sɪˈnɛsn̩s/
noun
Britannica Dictionary definition of SENESCENCE
[noncount] technical + formal
: the state of being old or the process of becoming old

— senescent

/sɪˈnɛsn̩t/ adjective