The term 'COLLEGIAN'S DIET STAPLE' is often associated with the 5-letter word 'RAMEN'. Ramen is a type of Japanese noodle soup that has become popular among college students due to its low cost and ease of preparation. It is often served with various toppings such as vegetables, eggs, and meat. Ramen is a versatile dish that can be enjoyed in many different ways, making it a popular choice for college students on a budget.