1. To be the most common or greatest in total or amount: The students at school predominated the number of teachers and those in the administration!
2. To dominate or to control someone or something: While cooking the spaghetti sauce, the smell of garlic predominated all the other ingredients that were used!
3. To be larger in number, quantity, power, status or importance: Hispanics predominate in the Los Angeles neighborhood.

At the international conference, the English language predominated all the other languages the members were speaking.
4. To appear very large or to occupy a commanding position: The gigantic tree predominates over the water fountain.