What does Radius stand for?

Radius, Inc. - Associated Press (SAG)

Religious Drama Society of Great Britain (BUAC)

Remote Access Dial-In User Service - Computer science (IGQR)

Remote Authentication Dial-In User Service - Computer science

Research and Development Institute of the United States - Research center (RCD)

Research and Development in the United States - Database

Residue Arithmetic Digital Image Understanding System (SAUS)