attenuate

Adjective
  1. Reduced in strength (synset 300885408)
    "the faded tones of an old recording"
    similar to: decreased, reduced - made less in size or amount or degree
    same as: attenuated, faded, weakened
Verb
  1. Weaken the consistency of (a chemical substance) (synset 200226805)
    referred to in: chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
    is a type of: weaken - lessen the strength of
    same as: rarefy
  2. Become weaker, in strength, value, or magnitude (synset 200221127)
    is a type of: weaken - become weaker
    subtypes: refine - attenuate or reduce in vigor, strength, or intensity by polishing or purifying

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