decerebrate I. de·cerebrate\(ˈ)dē+\transitive verb (-ed/-ing/-s) Etymology:de- + cerebr- + -ate : to remove the cerebrum from; also: to make incapable of cerebral activity • de·cerebration\(ˌ)dē+\noun-s II. de·ce·re·brate\|dēsə̇|rēbrə̇t, (ˈ)dē|serəb-\adjective 1.: decerebrated 2.: characteristic of decerebration < decerebrate rigidity >