Her gradual decay is due to a number of different processes - physical, chemical and biological.

Half-life is a mathematical and scientific description of exponential or gradual decay.

The gradual decay of renowned sites is not unique to Athens.

A further indication of the return to normal conditions was in the gradual decay of the coalition government.

The Romans shuddered with distaste at the thought of subjecting the dead to gradual decay.

In these situations gradual decay is given +voice, and continuous is given +liquid.

After the 6th century, the site fell into disuse and gradual decay.

During the '60s, a gradual economic and social decay set in.

Some weeks before their death, they feel a gradual decay; but without pain.

Geothermal energy is thought to be produced due to the gradual decay of radio active elements deep with in the earth's core.