To reduce the amplitude of an electrical, radio, or optical signal.
To weaken.
To reduce in size, force, value, amount, or degree.
To become thin or fine; to grow less.
To rarefy.
(of a beer) To become less dense as a result of the conversion of sugar to alcohol.
To reduce the virulence of a bacterium or virus.
To make thinner, as by physically reshaping, starving, or decaying.
Gradually tapering into a petiole-like extension toward the base.
to make as large as possible
to expand (a window) to fill the main display area