aging

American  

[ey-jing] / ˈeɪ dʒɪŋ /

Or ageing

noun

1. the process of becoming old or older.

   The aging of the population has had an effect on state revenues.

2. the process of bringing a product, material, etc., to maturity or a state fit for use.

   the proper aging of cheese in controlled conditions of temperature and humidity.

3. the process of making something seem older than it is.

   The leather tabletop is a recent replacement with deliberate aging and antiquing.

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adjective

1. becoming old or older; showing signs of growing old.

   Many of us are caring for an aging parent in declining health.

2. giving the appearance of being old or older.

   They used aging makeup on some of the actors instead of recasting the roles.

Etymology

Origin of aging

First recorded in 1400–50; late Middle English; age ( def. ) + -ing ¹ ( def. ) for the noun; age ( def. ) + -ing ² ( def. ) for the adjective

Example Sentences

Its aging multiple sclerosis franchise continues to suffer losses that must be offset by newer drugs.

From Barron's

A statement describes it as a side effect of reproductive tract disease, which she had a history of before arriving at the zoo and is common in aging female elephants.

From Los Angeles Times

The oil would likely not be used for Cuba's aging thermoelectric power plants, which rely on the country's own crude production.

From Barron's

It’s an insert-joke-here moment about aging and women’s bodies that she lets pass.

From The Wall Street Journal

That was driven in part by pent-up demand to replace aging infrastructure and meet state-driven renewable energy mandates, the research firm noted.

From The Wall Street Journal