The meaning of the Acronym RAT is...

RAT is

• Rough And Tumble
• Record of Achievement and Targets
• Reject All Tobacco
• Really Active Teacher
• Read And Think
• Run And Tell
• Reading At Twilight

More Meanings For RAT:

• RATS Datafile
• Random Access Texture
• Robust Audio Tools
• Recreated Analog Technologies
• Remote Administration Tool
• Remote Access Terminal
• Remote Access Trojan
• Regression Analysis Tool
• Robust Audio Tool
• Radio Access Technologies
• Radio Access Technology
• Rock Abrasion Tool
• Regression Analysis Tool
• Right Angled Triangle
• Rational Choice Theory

RAT is also in:

• Amateur Radio
• File Extensions
• General
• Geology
• Hardware
• Mathematics
• Networking
• Security
• Software
• Telecom