definition of roos
ROOS stands for. 1  4. ROOS. Regionale Omroep Overleg en Samenwerking. Media, Stichting, Radio. 2  2. ROOS. Regional Ocean Observing System. 3  2. ROOS. Royal Order of Scotland. 4  1. ROOs. Regional Operating Organizations. 5  1. ROOS. Reusable Object-Oriented Software.