Enhancer

n. improver, strengthener, intensifier (of taste or odor); (Biology) segment of DNA that is found near a gene and increases the appearance of the gene's visible phenotypes

Enhancer can mean one of the following:In genetics, an Enhancer (genetics) is a short region of DNA that can bind proteins called an activator (genetics), binding of activators to this enhancer region can initiate the transcription of a gene that may be some distance away from the enhancer, or can even be on a different chromosome. The increase in transcription is due to the activators recruiting transcription factors, which enhances the binding of RNA polymerase. Exciter (effect), audio effect unit.Enhancer (band) is a French Rapcore band.Enhancer - DSP based Winamp Plugin
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Noun
1. anything that serves by contrast to call attention to another thing's good qualities; "pretty girls like plain friends as foils"
(synonym) foil
(hypernym) attention
(derivation) enhance

(n.)
One who enhances; one who, or that which, raises the amount, price, etc.
  

A sequence on either side of a gene that stimulates a physically-linked specific promoter. They are located 10 to 50 kb downstream or upstream of a gene. They may be tissue-specific. The enhancer effect is mediated through sequence-specific DNA-binding proteins (see also silencer).