Added 9 October 2026 water-cooled adjective Categories: Describing WordsObscure Words adjective ! Definition from WordNet 3.1, Princeton University. More about water-cooled at Wordnik → Where our words come from → Kept cool or designed to be kept cool by means of water especially circulating water. a water-cooled engine Related Words: coolliquid-cooledair-cooledcoldwaterintercooledsodium-cooledcryocooledultracooledhydro-geothermalcooledcooling Back to today's word