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1. An incandescent, transparent layer of gas, primarily hydrogen, several thousand miles in depth, lying above and surrounding the photosphere of a star, such as the sun, but distinctly separate from the corona.
2. A gaseous layer similar to a chromosphere around a star.

chro′mo·spher′ic (-sfîr′ĭk, -sfĕr′-) adj.
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References in periodicals archive ?
The chromospheric temperature, however, changes in a completely unexpected way: above the temperature minimum, it begins to rise to as high as 25,000 K at the top of the chromospheric layer.
It would be difficult for us to distinguish such purposeful, nefarious camouflage from naturally occurring chromospheric lines.
2007) Chromospheric Alfvenic waves strong enough to power the solar wind.
The techniques introduced here will enable reliable and robust measurements of chromospheric magnetic fields, shedding new light on this enigmatic but centrally important layer of the solar atmosphere.
Such a model can account for the presence of both He I and He II emission lines in the chromospheric spectrum [27].
On Aug 8 a spectacular 'horned' dark filament graced the SE quadrant which was still present the following day, matching the alignment of chromospheric disturbance in the SW quadrant.
They cover interior, convection, and dynamo, the formation and evolution of sunspots and active regions; flux emergence and submergence; waves, reconnection, and chromospheric and coronal heating; magnetic fields as structuring agents of the solar atmosphere; flares, eruptions, and particle acceleration; solar wind and the interplanetary space; and Hinode and Solar Dynamics Observatory.
As this binary has a spectral classification of G4V I suggest the dip in the light curve is due to chromospheric activity.
Segmenting Chromospheric Images with Markov Random Fields.
Starting at roughly 6,000 kelvins at the sun's surface, the solar atmosphere's temperature falls to nearly 4,300 kelvins at an altitude of 500 kilometers before rising to typical chromospheric temperatures.
As the chromospheric ribbon swept across the region signaling the reconnection of the field lines that were opened during the eruption, the same cells reappeared immediately behind the ribbon.