attenuation: Meaning and Definition of
Pronunciation: (u-ten"y-ā'shun), [key]
- the act of attenuating or the state of being attenuated.
- the process by which a virus, bacterium, etc., changes under laboratory conditions to become harmless or less virulent.
- a decrease in a property, as energy, per unit area of a wave or a beam of particles, occurring as the distance from the source increases as a result of absorption, scattering, spreading in three dimensions, etc.
- attenuation (Thesaurus)