Online Google Dictionary

attenuated 中文解釋 wordnet sense Collocation Usage Collins Definition
Adjective
/əˈtenyo͞oˌātid/,
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Unnaturally thin,
  1. Unnaturally thin
    • - she was a drooping, attenuated figure
  2. Weakened in force or effect
    • - Roman influence became attenuated
  1. of an electrical signal; reduced in amplitude with little or no distortion
  2. attenuate: reduced in strength; "the faded tones of an old recording"
  3. (attenuate) rarefy: weaken the consistency of (a chemical substance)
  4. (attenuate) become weaker, in strength, value, or magnitude
  5. (attenuation) weakening in force or intensity; "attenuation in the volume of the sound"
  6. (attenuation) the property of something that has been weakened or reduced in thickness or density
  7. In physics, attenuation (in some contexts also called extinction) is the gradual loss in intensity of any kind of flux through a medium. For instance, sunlight is attenuated by dark glasses, X-rays are attenuated by lead, and light and sound are attenuated while passing through water.
  8. (Attenuation (biology)) The attenuator plays an important regulatory role in prokaryotic cells because of the absence of the nucleus in prokaryotic organisms. ...
  9. (Attenuation (brewing)) Attenuation is the percentage that measures the conversion of sugars into alcohol and CO2 by the fermentation process. The percentage is calculated by comparing weight or specific gravity of the extract before and after fermentation.
  10. (Attenuation (electronics)) An attenuator is an electronic device that reduces the amplitude or power of a signal without appreciably distorting its waveform.
  11. (Attenuation (statistics)) Regression dilution is a statistical phenomenon also known as "attenuation".
  12. Made, or become weak; subject to attenuation; Long and tapering (especially of leaves)
  13. (attenuate) To reduce in size, force, value, amount, or degree; To weaken; To rarefy; To reduce the virulence of a bacteria or virus; (electronics) To reduce the amplitude of an electrical signal; Gradually tapering into a petiole-like extension toward the base
  14. (attenuation) A gradual diminishing in the strength of something; A reduction in the level of some property with distance, especially the amplitude of a wave or the strength of a signal; A weakening in the virulence of a pathogen or other microorganism; The tapering of a leaf etc to a fine ...
  15. (attenuate) tapering gradually to a slender point.
  16. (Attenuate) To turn down, reduce, decrease the level of; the opposite of boost.
  17. (Attenuate) To reduce a signal's strength.
  18. (attenuate) v. tr.   1. To make slender, fine, or small: The drought attenuated the river to a narrow channel. 2. To reduce in force, value, amount, or degree; weaken: Medicine attentuated the fever's effect. 3. To lessen the density of; rarefy. 4. Biology. ...
  19. (Attenuate) To lessen; especially to lessen the amplitude of a signal. When audio signals are attenuated, typically a decrease in loudness occurs. However, attenuation need not always affect loudness -- f.e. the attenuation of a vibrato will result in a lessening of the depth of the vibrato.
  20. (Attenuate) to decrease in intensity with distance; usually referring to a light source.
  21. (ATTENUATE (virus)) To reduce the virulence of a virus, achieved by passaging the virus through tissue culture or live animals. The attenuated virus can be used as a vaccine if it infects and immunizes without causing disease.
  22. (Attenuate (attenuation)) The reduction in output of a signal. In speakers, a tweeter is oftentimes attenuated to match the level of a woofer. This attenuation can be achieved with series or parallel resistors, but often an L-pad is used to maintain a constant impedance load to the crossover.
  23. (Attenuate) (at-TEN-yew-ayt) -- Gradually narrowing to a point.
  24. (Attenuate) To decrease (or cut) the given frequency eg bass or treble, or the audible level of an instrument or microphone.
  25. (Attenuate) To make smaller, particularly in relation to an effect