Definition of upwelling
: the process or an instance of rising or appearing to rise to the surface and flowing outward; especially : the process of upward movement to the ocean surface of deeper cold usually nutrient-rich waters especially along some shores due to the offshore movement of surface waters (as from the action of winds and the Coriolis force)
First Known Use of upwelling
Seen and Heard
What made you want to look up upwelling? Please tell us where you read or heard it (including the quote, if possible).