| | Public Health & Safety | Medical Research What is the medical term R and stand for? The medical term "R" and "L" stand for: "R" - Right or rectus "L" - Left or lateralis Medical Research - Related Articles Difference Between Multipolar & Bipolar Neurons Sponsor Responsibilities in Clinical Trials Plaque Assay Method Journals About Personality & Childhood Pros & Cons of Therapeutic Cloning What does diagnostic mean when somebody says diagnostic? ALS Therapy Development Foundation