The meaning of the Acronym SU is...

SU is

• Straight Up
• Suck Up

More Meanings For SU:

• Switch User
• Substitute User
• Syntax Unit
• Switch Users
• Substitue User
• Super User
• Seismic Unix
• Set User
• Specified User
• Simultaneous Users
• Scan Udp
• Shut Up
• Service Unlimited
• superuser
• Shut Up!

SU is also in:

• Assembly
• Chat
• General
• Networking
• SMS
• Telecom
• Unix Commands