The crossword solution for the term 'STRAIGHT STARTER' is ORTHO, which is a five-letter word. Ortho is a prefix derived from the Greek word 'orthos, ' meaning 'STRAIGHT.' It is commonly used in medical and scientific terms to refer to something that is STRAIGHT or upright. For example, an orthopedic surgeon specializes in treating conditions related to the musculoskeletal system, such as fractures, dislocations, and spinal deformities.