Definition of attenuate
1 : to lessen the amount, force, magnitude, or value of : weaken … shows great skill in the use of language to moderate or attenuate the impact of awkward facts. — Bernard Lewis
2 : to reduce the severity, virulence, or vitality of an attenuated virus
3 : to make thin or slender Glass can be attenuated into fibers.
4 : to make thin in consistency : rarefy attenuate oil by heating it
: to become thin, fine, or less
attenuation\-ˌten-yə-ˈwā-shən, -yü-ˈā-\ noun
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Recent Examples of attenuate from the Web
The rock sheath attenuates the electromagnetic waves, as do the metal buildings:
Generally, violence in Mr. Wiseman’s work remains implied and attenuated, and more a matter of ordinary domination.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'attenuate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Definition of attenuate
1 : reduced especially in thickness, density, or force the attenuate limbs of a starving person
2 : tapering gradually usually to a long slender point attenuate leaves
Examples of attenuate in a Sentence
Earplugs will attenuate the loud sounds of the machinery.
an investment attenuated by significant inflation over the years
Did You Know?
Attenuate ultimately comes from a combination of the Latin prefix ad-, meaning "to" or "toward," and tenuis, meaning "thin." It has been on the medical scene since the 16th century, when a health treatise recommended eating dried figs to attenuate bodily fluids. That treatment might be outmoded nowadays, but attenuate is still used in medicine to refer to procedures that weaken a pathogen or reduce the severity of a disease. Most often, though, attenuate implies that something has been reduced or weakened by physical or chemical means. You can attenuate wire by drawing it through successively smaller holes, or attenuate gold by hammering it into thin sheets. You can even attenuate the momentum of a play by including too many costume changes.
ATTENUATE Defined for English Language Learners
Definition of attenuate for English Language Learners
: to make (something) weaker or less in amount, effect, or force
Medical Definition of attenuate
: to reduce the severity of (a disease) or virulence or vitality of (a pathogenic agent) a procedure to attenuate severe diabetes attenuated bacilli
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