This is a form of the verb "to predominate" which means to be the most numerous subgroup in a group. "There are adherents to 35 different religions in our town, but Roman Catholicism predominates." That is to say, of the group of religious people in our town, the Roman Catholics are the largest subgroup.
Executive
english
North, South America and Europe.
Jerusalem is mostly Jewish, so Judaism predominates.
Delta
updrafts
During periods of stress or increased activity, the sympathetic division of the autonomic nervous system predominates. And during periods of rest, the parasympathetic division of the autonomic nervous system predominates
james madison
The Legislative Branch
Dense irregular
Saturated Fat is the main contributors to peoples diets obtained from Animal sources.
Christianity predominates in Europe and in the Americas, but it also claims adherents in virtually every country of the world.