senescent

se·nes·cent

(sē-nes'ĕnt),

Growing old.

senescent

(sĭ-nĕs′ənt)

adj.

1. Growing old; aging.

2. No longer dividing. Used of a cell.

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se·nes′cence n.

se·nes·cent

(sĕ-nes'ĕnt)

Growing old.

senescent

Ageing. The term ought not to imply physical or mental deterioration, but often does.