attenuation

noun7

1. •
   A gradual diminishing of strength.
2. •
   A reduction in the level of some property with distance, especially the amplitude of a wave or the strength of a signal.
3. •
   A weakening in the virulence of a pathogen or other microorganism.
4. •
   The reduction of the active principles of medicines to minute doses.
5. •
   The tapering of a leaf etc to a fine point.
6. •
   A fabrication process in which a material is stretched out into a thin shape.
7. •
   The proportion of sugar that is converted to ethanol by a yeast.