In electronics, gain is a measure of the ability of a circuit to increase the power or amplitude of a signal from the input to the output, by adding energy to the signal converted from some power supply. It is usually defined as the mean ratio of the signal output of a system to the signal input of the same system. It is often expressed using the logarithmic decibel units . A gain greater than one, that is, amplification, is the defining property of an active component or circuit, while a passive circuit will have a gain of less than one.

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  1. The act of gaining.
  2. What one gains, as a return on investment or dividend.
    No pain, no gain.
  3. The factor by which a signal is multiplied.

Noun (etymology 2)

  1. A square or bevelled notch cut out of a girder, binding joist, or other timber which supports a floor beam, so as to receive the end of the floor beam.


  1. To acquire possession of what one did not have before.
    Looks like you've gained a new friend.
  2. To come off winner or victor in; to be successful in; to obtain by competition.
    to gain a battle; to gain a case at law
  3. To increase.
  4. To be more likely to catch or overtake an individual.
    I'm gaining (on you).
    gain ground
  5. To reach.
    to gain the top of a mountain
  6. To draw into any interest or party; to win to one's side; to conciliate.
  7. To put on weight.
    I've been gaining (weight).
  8. To run fast.


  1. Straight, direct; near; short.
    the gainest way
  2. Suitable; convenient; ready.
  3. Easy; tolerable; handy, dexterous.
  4. Honest; respectable; moderate; cheap.


  1. Straightly; quickly; by the nearest way or means.
  2. Suitably; conveniently; dexterously; moderately.
  3. Tolerably; fairly.
    gain quiet (= fairly/pretty quiet)

The above text is a snippet from Wiktionary: gain
and as such is available under the Creative Commons Attribution/Share-Alike License.

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