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repressor

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WordReference Random House Unabridged Dictionary of American English © 2026

re•pres•sor n.

represser.
Geneticsa protein that binds DNA at an operator site and thereby prevents transcription of one or more adjacent genes.

Latin; see repress, -tor
1955–60

'repressor' also found in these entries (note: many are not synonyms or translations):

corepressor - or - represser

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