solar

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Of, relating to, or proceeding from the sun: solar rays; solar physics.
2. adj. Using or operated by energy derived from the sun: a solar heating system.
3. adj. Determined or measured in reference to the sun: the solar year.

Century Dictionary and Cyclopedia

1. Of, pertaining or related to, or determined by the sun: as, the solar system; solar light; solar rays; solar influence.
2. In astrology, born under the predominant influence of the sun; influenced by the sun.
3. An electric lamp of the fourth class.
4. n. See sollar.
5. n. See sola.
6. n. In Roman and early medieval houses, a terrace, or balcony, or a room much exposed to the sun; a sollar.

Wiktionary

1. adj. Of or pertaining to the sun; proceeding from the sun; as, the solar system; solar light; solar rays; solar influence.
2. adj. Born under the predominant influence of the sun.
3. adj. Measured by the progress or revolution of the sun in the ecliptic; as, the solar year.
4. adj. Produced by the action of the sun, or peculiarly affected by its influence.
5. n. A loft or upper chamber forming the private accommodation of the head of the household in a medieval hall; a garret room.

GNU Webster's 1913

1. n. A loft or upper chamber; a garret room.
2. adj. Of or pertaining to the sun; proceeding from the sun. See Solar system, below.
3. adj. Born under the predominant influence of the sun.
4. adj. Measured by the progress or revolution of the sun in the ecliptic.
5. adj. Produced by the action of the sun, or peculiarly affected by its influence.

WordNet 3.0

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