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• n  the act of concealing the existence of something by obstructing the view of it
• n  the blocking of one sensation resulting from the presence of another sensation
  he studied auditory masking by pure tones
• n  scenery used to block the audience's view of parts of the stage that should not be seen
• v  hide under a false appearance
• v  put a mask on or cover with a mask
• v  make unrecognizable
• v  cover with a sauce
• v  shield from light

• Industrial-grade melamine is a masking agent used to hide the dilution of protein, in this case in milk products, including an infant formula widely popular in China.
• According to anthropologists, human festivities--probably going back to the Paleolithic era--featured the universal ingredients of feasting, dancing, costuming, masking and or .
• In the aftermath of their victory over the Soviets at Cierna and Bratislava, Czechoslovakia's rulers were carefully masking their jubilation.

• cover
• covering
• screening
• masking piece
• dissemble
• cloak
• mask
• disguise
• block out

• unmask

News & Articles

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• The Smell of Cinnamon Will Waft Out of Harlem’s Gas Pipeline
  Mmm, the sweet smell of new gas. While the Office of Emergency Management is fixing a gas pipeline, it's going to use cinnamon as a masking agent for the awful smell. Enjoy the scent on West 134 Street near the Hudson River while you can: It's only going to last from 8:30 to 10:30 p.m. today. Don't get so excited that this happens: Cinnamon-swallowing is dangerous! But it's okay to inhale. [ NYP ...
  June 17, 2013 - New York Magazine
• Cinnamon Smell in Harlem Is Actually Gas
  That wafting scent of cinnamon around upper Manhattan this morning is neither dangerous nor delicious : "It's a masking agent," the Office of Emergency Management said, used during work on an otherwise stinky gas pipeline. Maybe they could use it all summer?
  June 17, 2013 - New York Magazine
• Every UFC on Fuel TV 10 Fighter Returned Clean Drug Test Results
  The Brazilian Athletic Commission (CABMMA) announced on Friday that all fighters tested on the UFC on Fuel TV 10 fight card that took place on June 8 at the Ginásio Paulo Sarasate in Fortaleza, Brazil, returned negative test results for illegal drugs, performance enhancing drugs, stimulants and masking agents.
  June 15, 2013 - MMA Weekly via Yahoo! Sports

Quotes

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• Glenn Tilton in Chicago Tribune
  High fuel prices in the first half of 2008 combined with hedging losses "drove a $2.9 billion increase in our expenses compared to 2007 fuel prices, masking improvements in every other area of our business," Tilton told workers.
• Tom Coughlin in International Herald Tribune
  I can't tell you it wasn't,Coughlin said. "He is certainly very good at masking all of that."
• Geno Auriemma in Washington Post
  It happened early enough that it did allow us a chance to regroup,Auriemma said. "We've been hiding it and we've been masking it and we've been covering it up, hoping that it would never catch up to us. So far it hasn't."