attenuator

(redirected from sound attenuator)
Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.

at·ten·u·a·tor

(ă-ten'yū-ā-tŏr, -tōr),
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.

attenuator

[əten′yo̅o̅·ā′tər]
Etymology: L, attenuare, to make thin
an agent that weakens the toxicity of a poisonous substance or the virulence of a microorganism.

attenuator

a regulatory NUCLEOTIDE sequence occurring in the LEADER REGION of an operon (see OPERON MODEL and containing a TRANSCRIPTION stop signal. The attenuator acts as a fine control mechanism for the activity of structural genes, sometimes being operative, sometimes not, depending on conditions in the cell.
References in periodicals archive ?
Multiple fan and filter selections are available, as well as multiple coil face areas per unit size, piping vestibules, blenders/air mixers, sound attenuators, and manual selections to accommodate special components.
Rather than add asphalt melt sheets and other sound attenuators to the inner panels of the body-in-white, OEMs program robots to spray consistent coatings of Audio Guard on pre-determined areas of the structure.
The company's major product lines include desiccant and heat recovery wheels, acoustic panels and sound attenuators, packaged ventilation equipment, and spiral, round and oval duct.