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su•per•gran•u•la'tion cell"



Pronunciation: (sOO"pur-gran"yu-lā'shun), [key] Astron.
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 mi. (16,000–32,000 km) and lasting longer than a day. Also called su"per•gran"u•la'tion.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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