The meaning of the Acronym HSR is...

HSR is

• Hamilton Street Railway

More Meanings For HSR:

• Hidden Surface Removal
• Hierarchical Scene graph Renderer
• High Speed Research
• Holland Sleep Research
• Hot Shot Rod
• HomeStar Runner
• Hill Seminar Room
• The Hart Scott Rodino
• Hidden System And Read
• Hot Swap Raid
• HI Shear Technology Corporation
• High Speed Rail
• Hamilton Street Railway

HSR is also in:

• AMEX Symbols
• Funnies
• Hardware
• Hobbies
• Railroads
• Software
• Transportation
• Unfiled
• Universities