super granulation cell

supergranulation cell

[soo-per-gran-yuh-ley-shuhn]
noun Astronomy.
one of a number of large convection cells in the photosphere and chromosphere of the sun, each having a diameter of 10,000–20,000 miles (16,000–32,000 km) and lasting longer than a day.
Also called supergranulation.


Origin:
1970–75; super- + granulation

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