aging

Etymology

verb

1. present participle and gerund of age

noun

1. The process of becoming older or more mature.
2. The deliberate process of making something (such as an antique) appear (or, in science fiction, become) older than it is.
3. (gerontology) The accumulation of damage to macromolecules, cells, tissues and organs with the passage of time; the progressing loss of health, mobility, vibrancy and body functionality, resulting in biological death.
4. Wear; wear and tear.

adj

1. Becoming elderly.
   The aging artist could no longer steadily hold the brush.