Definition of overexpression in English:

overexpression

noun

  • 1The excessive or exaggerated expression of feelings, an opinion, etc.

  • 2Genetics. The production of abnormally large amounts of a substance which is coded for by a particular gene or group of genes; the appearance in the phenotype to an abnormally high degree of a character or effect attributed to a particular gene.

Origin

Mid 19th century; earliest use found in The Spectator. From over- + expression.

Pronunciation

overexpression

/ˌəʊv(ə)rɪkˈsprɛʃn//ˌəʊv(ə)rɛkˈsprɛʃn/