'Chromosphere' definitions:
Definition of 'chromosphere'
From: WordNet
noun
A gaseous layer of the sun's atmosphere (extending from the photosphere to the corona) that is visible during a total eclipse of the sun
Definition of 'Chromosphere'
From: GCIDE
- Chromosphere \Chro"mo*sphere\, n. [Gr. ? color + E. sphere.] (Astron.) An atmosphere of rare matter, composed principally of incandescent hydrogen gas, surrounding the sun and enveloping the photosphere. Portions of the chromosphere are here and there thrown up into enormous tongues of flame. [1913 Webster]