v. & adj.
v.tr. 1 make thin. 2 reduce in force, value, or virulence. 3 Electr. reduce the amplitude of (a signal or current).
adj. 1 slender. 2 tapering gradually. 3 rarefied. attenuated adj. attenuation n. attenuator n.
[ L attenuare (as AD-, tenuis thin) ]