attenuation
[ uh-ten-yoo-ey-shuh n ]
/ əˌtɛn yuˈeɪ ʃən /
noun
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.
Physics.
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.
Origin of attenuation
OTHER WORDS FROM attenuation
sub·at·ten·u·a·tion, nounWords nearby attenuation
attentive,
attentively,
attenuant,
attenuate,
attenuated virus,
attenuation,
attenuator,
attercop,
attest,
attestation,
attested
Example sentences from the Web for attenuation
British Dictionary definitions for attenuation
attenuation
/ (əˌtɛnjʊˈeɪʃən) /
noun
the act of attenuating or the state of being attenuated
the loss of energy suffered by radiation as it passes through matter, esp as a result of absorption or scattering
Medical definitions for attenuation
attenuation
[ ə-tĕn′yōō-ā′shən ]
n.
A dilution, thinning, or weakening of a substance, especially a reduction in the virulence of a pathogen through repeated inoculation, growth in a different culture medium, or exposure to heat, light, air, or other weakening agents.
The energy loss of an ultrasonic beam as it passes through a material.