The term 'saprophagous' (12 letters) is used to describe organisms that feed on decaying matter. These organisms are known as saprophytes and they play an important role in the decomposition of organic material. Saprophagous organisms are found in a variety of habitats, including soil, water, and even dead animals. They are essential for the cycling of nutrients and energy in ecosystems, as they break down dead organic matter into simpler compounds that can be used by other organisms.