burn off

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burn off

1. To disperse or evaporate as a result of heating. Don't worry, most of the alcohol will burn off once you pour the wine into the hot pan.
2. To cause something to disperse or evaporate through heating. In this usage, a noun or pronoun can be used between "burn" and "off." The sun should hopefully burn this fog off before we're due to set sail.
3. To use fire to destroy existing vegetation. In this usage, a noun or pronoun can be used between "burn" and "off." We need to burn off the dried brush in the field before the next planting season.
4. To expend something, typically energy or calories. I need to burn off that big dinner, so I'm going to hop on the treadmill for a bit. Let the dog run around outside and burn off some energy.
See also: burn, off
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

burn something off something

 and burn something off
to cause excess volatile or flammable substance to burn until there is no more of it. We burnt the gasoline off the water's surface. Why did you burn off the gasoline?
See also: burn, off

burn off

[for some excess volatile or flammable substance] to burn away or burn up. A film of oil on the surface of the water was burning off, making dense black smoke. The alcohol burned off and left a delicious flavor in the cherries jubilee.
See also: burn, off
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

burn off

1. Dissipate by heat, as in The sun will soon burn off the morning fog.
2. Clear land by burning vegetation, as in They've decided to burn off part of the field to prepare it for another planting. This practice has long been common in many parts of the world, but the precise term dates only from the first half of the 1800s.
See also: burn, off
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in periodicals archive ?
Every 10 hours of operation, the OBOE takes approximately 1/4-gal of oil from the engine and injects it into the fuel system where it's burned off. The OBOE then replaces that engine oil from its 1.71-gal reservoir.
If the natural gas burned off in 2006 had been sold on the U.S.
Read a Jeffrey Archer novel and burned off a Tic Tac.
Paul Sculthorpe and Paul Wellens, two of St Helens' biggest stars, are helping to launch the Calorie Map which will show the number of calories burned off on each walk based on the number of steps.
AS the gas began to coalesce, new stars burned off the hydrogen fog.
Jet fuel (call it kerosene) does not burn at a high temperature and would have burned off completely in a maximum of ten minutes.
Also, the sample analysis by MoDOT indicated that the wood debris in the RAS appeared to be either burned off or permeated with asphalt after passing through the hot mix plant.
It's an activity that can set you up for a hearty breakfast in the morning, having burned off more than 200 calories in the process.
When the resin binders completely burned off at 360C (680F), the contraction process stopped, and the sand grains, free of resin binders, started to expand.
However, most office jobs are sedentary and excess calories are not burned off. An employee would have to sit at his or her computer for 49 hours to burn off one confectionery bar, and 30.5 hours for a packet of crisps.
Afterwards a spokeswoman claimed all the alcohol was burned off during the cooking process.
A heavy fog shrouded the Eugene area in the morning and never burned off. The weather in Corvallis, however, was mostly sunny.
In the Brooklyn process, these stripped hulks were sent into a homemade incinerator, where the organics were burned off. "They took the hulks and quenched them, and that released a whole lot of ash," says Burlingame.
The twin seven-story buildings, which were constructed in 1960 and contain 640 units, required a unique forward commitment to preserve the 6.75 percent rate for the owner while he burned off the existing insurance company yield maintenance penalty.