to weaken or reduce in force, intensity, effect, quantity, or value

to attenuate desire.

to make thin; make slender or fine.

Bacteriology, Immunology . to render less virulent, as a strain of pathogenic virus or bacterium.

Electronics . to decrease the amplitude of (an electronic signal).

to become thin or fine; lessen.

weakened; diminishing.

Botany . tapering gradually to a narrow extremity.