0 past simple and past participle of counteract
1 to reduce or remove the effect of something unwanted by producing an opposite effect:
Drinking a lot of water counteracts the dehydrating effects of hot weather.
Their longings and their gratifications depend upon a level of oestrogen which is counteracted by the progestagens in all oral contraceptives.
As such, the initial benefit of conditioning may be counteracted by the hidden cost of learning.
Counteractive niche construction implies only that a novel selection pressure is counteracted by the actions of an organism.
Such problems are counteracted here by the large number of citations.
The primary objective remains the effective treatment of the delirium, and temporary, reversible metabolic disturbances can be generally tolerated and counteracted in a hospital setting.
Unsettledness was related to problems with co-tenants or neighbours that apparently were not counteracted by formal support.
The idea is rather that of a tendency which is not particularly strong and which may be counteracted by other in-uences.
This effect is counteracted by later reproductive maturity of males and\or higher adult mortality of males (rows 13 and 15).
