What does Dian stand for?

Hymmus in Dianam - of Callimachus - Classical studies (OCD)

Decca Integrated Airborne Navigation (or Navigator) (SAUS)

DECCA Integrated Airborne Navigator

Diana Truck Lines - Common carrier symbol

Dianon Systems - NASDAQ symbol

Dianon Systems, Inc. - NASDAQ symbol (SPSG)

Digital Analog - Computer science (IEEE)

Digital Analog Simulator (NITA)

Doppler Inertial Airdata Navigation (ACAE)