Pertaining to the Sun (the star Sol).

Sun worship; heliotheism. / (derogatory) A tendency to overstate the role of the sun in explaining the roots of mythology.

plural of solarism

Alternative letter-case form of Solar System; the Sun and all the objects in orbit around it.

Any collection of heavenly bodies including a star or binary star, and any lighter stars, brown dwarfs, planets, and other objects in orbit.

(astronomy) Any of the large eruptions of luminous hydrogen gas that rise thousands of kilometers above the chromosphere of the Sun.

(astronomy) The outflow of charged particles from the solar corona into space. Because of the high temperature of the particles of the corona, they are moving at speeds higher than the solar escape velocity.

(astronomy) The local time based on a solar day - the mean time between successive noons.

A pith helmet.

(astronomy) one day of solar time, the time between successive noons; the time in which a planet such as Earth apparently rotates once around its axis, relative to the sun (on Earth about 24 hours as an average - the length of solar day is not constant throughout the year)