The two crossword solutions for the term SPAN are SRAS (4 letters) and SRTAS (5 letters). SRAS stands for Senior Research Associate Scientist, which is a job title typically given to someone with a PhD in a scientific field who is responsible for conducting research and developing new products. SRTAS stands for Senior Research Technician Associate Scientist, which is a job title typically given to someone with a Bachelor's degree in a scientific field who is responsible for assisting with research and helping to develop new products.