noun. the intensely luminous surface of a star (especially the sun).
- natural object
- -sphere (English)
- photo- (English)
Example sentences of the word photosphere
1. Noun, singular or mass
The light it projects is faint compared to the bright light given off by the photosphere.
The *photosphere* consists of a zone in which the sun's layers change from being completely opaque, thus blocking radiation, to being transparent.
Energy escaping the photosphere moves at about the speed of light, taking about eight minutes to reach Earth.
4. Verb, base form
The inner core, radiative zone, convection zone, subsurface flows and photosphere can be represented with contrasting colors to enhance their individual representations.