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heaviside layer

n.
1.a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length

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Word of the Day

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  • heaviside
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  • heaving
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  • heaviness
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  • heavily traveled
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  • heavily
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  • heavier-than-air craft
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  • heavier-than-air
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  • heaves
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  • heaver
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  • heavenwards
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  • heavy
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  • heavy cream
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  • heavy hydrogen
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  • heavy lifting
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  • heavy metal
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  • heavy swell
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  • heavy water
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  • driver
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  • retrofit
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  • poet laureate
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  • external angle
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  • well-behaved
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  • roughdried
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  • hanging chad
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  • genus roystonea
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  • nightwalker
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  • ray flower
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    Idiom of the Day

    mark up (a price) or mark (a price) up
    to raise the price of something
    The store marked up the price of the camping equipment at the beginning of the summer.



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    That's the guy who was on TV the other night, ________?

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