Word of the Day
Apps by Dictionary
What's the "een" in Halloween?
a layer of the atmosphere in which there is a temperature inversion, with the layer tending to prevent the air below it from rising, thus trapping any pollutants that are present.
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for
The atmosphere reacts in a similar manner forming waves of air on the edges of the
Second, modifications were made in the strength and depth of the surface-based
The crystal type is sometimes indicative of a temperature
in the atmosphere.
As this warm air rises, it erodes and raises the base of the
Air pollution is primarily retained, however, by an
that forms when the air is practically motionless.
Ozone levels are highest during the warm months when there is strong sunshine, high temperatures and an
has increased burning at night and suppressed intense burning during the day.
has continued the trend of increased burning at night and suppressed burning during the day.
Evolution of the nocturnal
at an urban and nonurban location.
Discover our greatest slideshows
Seven Spooky Words for Halloween
Q Without U: 9 Must-Know Terms for...
From the Trenches: Words of World...
13 Essential Literary Terms
Browse more topics on our blog
What Is the Difference Between Discreet and Discrete?
Learn the correct uses of these two commonly confused homophones.
What Character Was Removed from the Alphabet?
What mistaken pronunciation gave this character its name?
This small mark has two primary uses: to signify possession or omitted letters.
How Do I Get a Word into the Dictionary?
People invent new words all the time, but which ones actually make it?
Word of the Day
Difficulty index for
Few English speakers likely know this word
Word Value for
Words With Friends
Nearby words for inversion layer
inver grove heights
inverse address resolution protocol
inverse comment convention
inverse square law
inversion of uterus