tooth decay

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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WordNet
tooth decay

noun
soft decayed area in a tooth; progressive decay can lead to the death of a tooth [syn: cavity
WordNet® 3.0, © 2006 by Princeton University.
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00:10
Tooth decay is always a great word to know.
So is doohickey. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a gadget; dingus; thingumbob.
Example sentences
It's responsible for obesity and tooth decay around the world.
Low-cost dental care providers and tips on preventing tooth decay.
Dental caries is an infectious disease that results in tooth decay and cavities
  if left untreated.
Fluoride is a chemical commonly used to prevent tooth decay.
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