from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Flux per unit area.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun physics A measure of rate of flow of a fluid, particles or energy per unit area

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun (physics) the number of changes in energy flow across a given surface per unit area


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