This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Of, relating to, or proceeding from the sun: solar rays; solar physics.

adj. Using or operated by energy derived from the sun: a solar heating system.

adj. Determined or measured in reference to the sun: the solar year.

adj. Of or pertaining to the sun; proceeding from the sun; as, the solar system; solar light; solar rays; solar influence.

adj. Born under the predominant influence of the sun.

adj. Measured by the progress or revolution of the sun in the ecliptic; as, the solar year.

adj. Produced by the action of the sun, or peculiarly affected by its influence.

n. A loft or upper chamber forming the private accommodation of the head of the household in a medieval hall; a garret room.

n. A loft or upper chamber; a garret room.

adj. Of or pertaining to the sun; proceeding from the sun. See Solar system, below.

adj. Born under the predominant influence of the sun.

adj. Measured by the progress or revolution of the sun in the ecliptic.

adj. Produced by the action of the sun, or peculiarly affected by its influence.

Of, pertaining or related to, or determined by the sun: as, the solar system; solar light; solar rays; solar influence.

In astrology, born under the predominant influence of the sun; influenced by the sun.

An electric lamp of the fourth class.

n. See sollar.

n. See sola.

n. In Roman and early medieval houses, a terrace, or balcony, or a room much exposed to the sun; a sollar.

adj. relating to or derived from the sun or utilizing the energies of the sun

"Fig 3/82 A variation of solar chimney with “solar air ramp” [2] 3.1.5.3 Passive cooling means"

solar cyclone    solar theory    solar attachment    solar day    solar print    solar walk    solar star    solar-radiation register    solar plexus    solar flowers   

extrasolar    solar microscope    solar calendar    solar flowers    solar month    solar energy    solar engine    solar lamp    solar day    solar mass   

soler    solere    sollar   

heliac    heliacal   

Kolar    Roller    bipolar    bolar    bowler    coler    comptroller    controller    polar    roller   

Science   

lunar    magnetic    atomic    thermal    internal    stellar    optical    cosmic    infrared    terrestrial