Aetna, E.G. is a seven-letter term that is the solution to a crossword puzzle. Aetna is an American health insurance company that was founded in 1853 and is now one of the largest health insurers in the United States. It provides a range of health insurance products and services for individuals, families, and businesses. Aetna is also known for its innovative approach to health care, such as its focus on preventive care and its use of technology to improve customer service.