the organic process of growing older and showing the effects of increasing age
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the property characteristic of old age
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Senescence \Se*nes"cence\, n. [See {Senescent}.] The state of growing old; decay by time.
But it hasn't done an awful lot lately, and people are beginning to wonder whether the club members aren't napping in their wing chairs, victims of early senescence.
The new experiments settle a scientific question about the role of ethylene in fruit, vegetable and flower senescence, or ripening and spoiling, Dr. Theologis explained.