attenuator(redirected from sound attenuator)
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1. An electrical system of resistors and capacitors used to reduce the strength of electrical signals, as in ultrasonography.
2. The terminator sequence in DNA at which attenuation occurs; located between the operator and the gene for the first protein in an operon.
Etymology: L, attenuare, to make thin
an agent that weakens the toxicity of a poisonous substance or the virulence of a microorganism.