initialism of reactive oxygen species

• highly reactive oxygen-containing molecules in biology

initialism of Robot Operating System, robotics middleware

• framework for nodes, messages, and tools

initialism of reverse osmosis or reverse osmosis system

• water purification by semipermeable membrane under pressure

initialism of restraining order

• court order limiting contact or approach

initialism of receiving office

• office where submissions or mail are accepted

initialism of rights of survivorship

• surviving co-owner takes title automatically

initialism of run of station

• ads scheduled anywhere at station’s discretion