photosphere noun. ['fǝʊtǝsfɪǝ] M17.
[from PHOTO- + -SPHERE.]
1. A sphere or orb of light, radiance, or glory. Now only as fig. use of sense 2. M17.
2. Astronomy. The luminous surface layer of the sun or another star, below the chromosphere. M19.

■ photospheric [fǝʊtǝ(ʊ)'sfɛrɪk] adjective M19.

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