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empty calorie

noun
1.
a calorie whose source has little or no nutritional value:
Junk food has only empty calories.
Origin
1965-1970
1965-70, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Contemporary definitions for empty calories
plural noun

calories obtained from food having no nutrients

Dictionary.com's 21st Century Lexicon
Copyright © 2003-2014 Dictionary.com, LLC
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Idioms and Phrases with empty calories

empty calories

Food that has little or no nutritional value. For example, Snacking on beer and potato chips makes for a lot of empty calories. [ 1960s ]
The American Heritage® Idioms Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Word Value for empty

12
13
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