The meaning of the Acronym SLR is...

SLR is

• Saturday Long Run
• Sport Light Racing
• Smells Like Records

More Meanings For SLR:

• Service Level Reporter
• Scalable Linear Recording
• Steam Lock Release
• Small Lattice Relaxation
• Sea-level Rise
• Satellite Laser Ranging
• Stupidly Low Racer
• Silly Little Ranger
• Single Lens Reflex
• Synthetic Lipid Remover
• Sorely Lacking Relief
• Stealing Left Right
• Super Low Racer
• Supercilious Like Randall
• Standard Lense Reflex

SLR is also in:

• Adults
• Electronics
• Funnies
• General
• Hardware
• Ocean Science
• Photography
• Security
• Unfiled