overexpression
noun
over·ex·pres·sion
-rik-ˈspresh-ən 
: excessive expression of a gene (as that caused by increasing the frequency of transcription)
We now suspect that many, if not most, cancers arise through the overexpression … of key cellular regulatory genes—
J. D. Watson et al.
J. D. Watson et al.Cite this Entry
“Overexpression.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/overexpression. Accessed 2 Jul. 2025.
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