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

  • noun The amount of extra oxygen required by muscle tissue during recovery from vigorous exercise.

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

  • noun the amount of extra oxygen required to oxidize lactic acid in the muscles built up during vigorous exercise

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

  • noun a cumulative deficit of oxygen resulting from intense exercise; the deficit must be made up when the body returns to rest


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