gravity-fed

The compound adjective "gravity-fed" is a modern technical term built from two distinct English words. "Gravity" traces back to the Latin gravis, meaning "heavy," which in physics came to denote the force that gives weight to objects. "Fed" originates from the Old English verb for supplying nourishment. Combined, they create a logical descriptor for a system where the operative principle is the downward flow of a liquid driven solely by its own weight, supplying a lower point. This term elegantly encapsulates a simple mechanical concept by linking the ancient idea of heaviness with the basic action of provision.

Structure: gravity (weight) + fed (supplied) - gravity: From Latin gravitas (heaviness, weight), from gravis (heavy, serious). Functions as a noun denoting the natural force of attraction. - fed: Past participle of the verb feed, from Old English fēdan (to nourish, supply). Functions as a participial adjective indicating the manner of supply.