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attenuation

[ uh-ten-yoo-ey-shuhn ]
/ əˌtɛn yuˈeɪ ʃən /
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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.
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Origin of attenuation

1585–95; (<Middle French ) <Latin attenuātiōn- (stem of attenuātiō). See attenuate, -ion

OTHER WORDS FROM attenuation

sub·at·ten·u·a·tion, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use attenuation in a sentence

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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for attenuation

attenuation
[ ə-tĕn′yōō-āshən ]

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.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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