释义 |
se·nes·cence \sə̇ˈnesən(t)s\ noun (-s) Etymology: from senescent, after such pairs as English benevolent : benevolence 1. : the quality or state of being senescent < clinical problems of later maturity, senescence, and senility — Therapeutic Notes > < racial senescence > 2. : the phase of plant growth that extends from full maturity to actual death and is characterized by an accumulation of metabolic products, increase in respiratory rate, and a loss in dry weight especially in leaves and fruits |