What does ROSA stand for?

Race Open Service Architecture (SAUS)

Radar Open Systems Architecture - Military - Army

Recording Optical Spectrum Analyzer (MCD)

Record One Stop Association - Defunct (EA)

Regional Office for Southern Africa (SAUS)

Regional Ozone Study Area - Environmental Protection Agency (EPAT)

Remotely-Operated Service Arm - Nuclear energy (NUCP)

Report of Student Answers - Scoring sheet for the Scholastic Aptitude Test (SAT) (PAZ)

Report of Supply Activity (MCD)

Rock Sandpiper - Common English name - Scientific name: Calidris Ptilocnemis - American Ornithologists Union four-character bird identification (IBP)