transition region

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noun Astronomy.

a thin and very irregular layer of the sun's atmosphere that separates the hot corona from the much cooler chromosphere.

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Words nearby transition region

transitional, transition area, transition element, transition point, transition probability, transition region, transition team, transition temperature, transitive, transitive verb, transitman

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use transition region in a sentence

And that may well be what is happening in the Barnett Shale region around, yes, Dallas and Irving.
26 Earthquakes Later, Fracking’s Smoking Gun Is in Texas|James Joiner|January 7, 2015|DAILY BEAST
A second document was titled: “Gambia Reborn: A Charter for Transition from Dictatorship to Democracy and Development.”
The Shadowy U.S. Veteran Who Tried to Overthrow a Country|Jacob Siegel|January 6, 2015|DAILY BEAST
Instead, spa hotels filled up with over 30,000 refugees from the war-troubled Donbas region of eastern Ukraine.
Is Putin Turning to Terrorism in Ukraine?|Anna Nemtsova|January 6, 2015|DAILY BEAST
In doing so he exposed the failure of other airlines in the region to see the huge pent-up demand for cheap travel.
Annoying Airport Delays Might Prevent You From Becoming the Next AirAsia 8501|Clive Irving|January 6, 2015|DAILY BEAST

The region is marketed for visitors as “Aryan Valley,” and many citizens have taken to tacking on “Aryan” to their last names.
The Himalayas’ Hidden Aryans|Nina Strochlic|January 3, 2015|DAILY BEAST
Within the past thirty years civilization has rapidly taken possession of this lovely region.
Among the Sioux|R. J. Creswell
Nowhere can be found a region capable of supporting a larger population to the square mile than Lombardy.
Glances at Europe|Horace Greeley
From that region they issue to inflict diseases, especially blindness and deafness.
Solomon and Solomonic Literature|Moncure Daniel Conway
At that time, the postage on letters from that region was very high, sometimes as much as fifty or sixty cents, or even a dollar.
The Boarded-Up House|Augusta Huiell Seaman
I should judge that a peck of corn is about the average product of a day's work through all this region.
Glances at Europe|Horace Greeley

Scientific definitions for transition region

transition region

The area in a seed-bearing plant where the vascular tissue of the root changes into the vascular tissue of the stem. In eudicotyledons, the roots have a solid cylinder of vascular tissue surrounded by cortex. The vascular tissues gradually branch apart and reorient themselves in the stem around a central pith.

The thin layer of the solar atmosphere that separates the chromosphere from the corona. In the transition region, temperatures increase from a relatively cool 20,000°K in the chromosphere to the 1,000,000°K and higher temperatures of the corona. Transition region chemistry involves the ionization of hydrogen and other elements; the light produced by this region comes from ionized forms of carbon, oxygen, and silicon.