Dictionary

photosphere

noun pho·to·sphere \ˈfō-tə-ˌsfir\

Definition of PHOTOSPHERE

1
:  a sphere of light or radiance
2
:  the luminous surface layer of the sun or a star
pho·to·spher·ic \ˌfō-tə-ˈsfir-ik, -ˈsfer-\ adjective

First Known Use of PHOTOSPHERE

1664

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