wet-bulb adjective 1wet bulb noun 2forms 1 adjective1 •Relating to wet-bulb temperature measurements.The wet-bulb temperatures in South Asia this spring have been called “unsurvivable.” But in a lot of coverage, the complexities and nuances of wet-bulb measures are lost, Huber said. — 2022 wet bulb noun2 •(informal) A wet-bulb heatwave. •Ellipsis of wet bulb temperature formswet bulbs
