transactivate [tran-sak-tuh-veyt, -zak-] verb (used with object), trans·ac·ti·vat·ed, trans·ac·ti·vat·ing.
- to activate the replication of (a viral gene) through the presence of a gene at another locus, especially following a viral infection.
Related formstrans·ac·ti·va·tion, nountrans·ac·ti·va·tor, noun