upwelling

From up- +‎ welling.

upwelling (plural upwellings)

1. An upward movement from a lower source.
   • 2009, Diarmaid MacCulloch, A History of Christianity, Penguin, published 2010, page 873:

     Rather separate from the abolitionist campaign, although likewise led by anglophone Evangelicals, was a sudden upwelling of commitment to worldwide mission.

2. the oceanographic phenomenon that occurs when strong, usually seasonal, winds push water away from the coast, bringing cold, nutrient-rich deep waters up to the surface

• downwelling

upwelling

1. present participle and gerund of upwell

• welling up