(1) The act or result of increasing in size or effect.
(2) An increase in the frequency of a gene or chromosomal region, as a result of replicating a DNA segment by in vivo or in vitro process, such as by gene duplication or polymerase chain reaction, respectively.
Word origin: Latin amplificatio < amplificare (“‘to amplify’”).
Related form: amplify (verb)
Related term: gene amplification