RNR - Receive Not Ready

ROC - Remote Object Class

ROCOF - Rate of Occurrence of Failures

ROFL - "Rolling On the Floor

ROI - Return On Investment

ROI - Region Of Influence

ROL - Rotate Left

ROL - Request On Line

ROLAP - Relational On Line Analytical Processing

ROM - Read Only Memory

ROM BIOS - Read Only Memory Basic Input / Output System

ROOM - Real - time Object Oriented Modeling

ROPE - Reusability - Oriented Parallel - programming Environment

ROR - Rotate Right

ROS - Read Only Storage

ROSE - Remote Operation Service Element

ROT - Read - Only Terminal

RP - Running Priority

RPB - Reverse Path Broadcasting

RPC - Remote Procedure Call

RPCL - Remote Procedure Call Language

RPF - Reverse Path Forwarding

RPG - Report Program Generator

RPM - Red hat Package Manager

RPM - Reverse Path Multicasting