The process or state of converging
A location where airflows or ocean currents meet, characteristically marked by upwelling (of air) or downwelling (of water)
The property of an infinite series by which, though it may not converge, the derived series formed by taking the absolute values of the terms of the given series does converge.
The zone of the Antarctic Ocean where the cold, nutrient-laden Antarctic surface water sinks beneath the warmer waters to the north
A narrow zone near the equator where northern and southern air masses converge, typically producing low atmospheric pressure