For this reason, this compound, which is a purple powder, slowly degrades upon exposure to air and light.

But solid-state lighting slowly degrades rather than burning out so the industry is struggling to come up with an agreed standard for "useful life."

He played again for the Braves in 1949, but the heart problem slowly degraded his ability, as he had a .231 batting average.

Although oil buried in oxygen-starved sediments is known to degrade slowly, the researchers suggest that another process may be at work.

Some of the bioneural networks have been slowly degrading ever since we left the planet, even before we returned.

With instrumentation when you get to, if you cut the wire the actual indication doesn't slowly degrade.

In some cases, they might not knock out a complex structure like a power grid but slowly degrade its performance, he said.

The location had been neglected and slowly degrading since.

While the material was inexpensive, the lenses and windows degraded slowly with exposure to atmospheric moisture.

The polymer slowly degrades into smaller fragments, releasing a natural product, and there is controlled ability to release a drug.