aging

or age·ing

[ ey-jing ]

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.

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.

Word History and Origins

Origin of aging¹

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

In an outdoor trial to test performance under real life conditions, they attached the sensor to birch leaves to track changes in leaf color during autumn, leaf fall, and aging over two weeks.

From Science Daily

They are also looking into other diseases that may involve protein mobility, and are exploring the role of reduced protein mobility in aging.

From Science Daily

Bhattacharya’s academic work, funded by NIH’s National Institute on Aging, has explored topics ranging from the impact of Medicare on health outcomes to aging in Japan and antibiotic resistance in Africa.

From Science Magazine

George, who before her retirement worked part-time on issues surrounding aging for an L.A.

From Los Angeles Times

For starters, the team's discovery shows cells are a lot smarter than previously imagined, which could reshape how we understand oxidative stress and its role in diseases like cancer or aging.

From Science Daily