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sol3 the smaller monetary unit of Peru. (Cf. inti.)
sol4 a colloid that has the properties of a liquid. (Cf. gel.)
solace comfort or consolation in times of sorrow or suffering. [3 definitions]
solanum any of the vines, trees, and other plants of the nightshade family.
solar of, relating to, or derived from the sun. [3 definitions]
solar battery a system of photovoltaic cells that converts solar energy into electricity.
solar cell see photovoltaic cell.
solar constant the average rate, per specified unit of area, at which the earth receives radiant energy.
solar cooker a simple device that uses reflected rays from the sun to boil water, cook food, and the like.
solar cycle an eleven-year cycle of recurring sunspots and other solar phenomena.
solar day the period between one midnight and the following midnight. [2 definitions]
solar eclipse an eclipse of the sun, when, at a particular observation point, light from the sun is blocked by the interposition of the moon.
solar flare a short intense outburst of solar gases, often near sunspots, accompanied by cosmic rays, x-rays, and magnetic storms.
solar furnace a furnace for heating, smelting, and the like, that uses a parabolic reflector to focus solar rays.
solarium a room or porch that is enclosed in glass to admit sunlight for relaxation or convalescence.
solarize to affect by exposing to sunlight. [3 definitions]
solar panel a panel of connected photovoltaic cells.
solar plexus a network of nerves located between the stomach and aorta, supplying nerves to the abdominal organs. [2 definitions]
solar pond a pond with a top layer of fresh water and a bottom layer of dense hot salty water, used to trap solar energy for use in heating or to generate electricity.
solar still a system or apparatus for purifying salt water by distilling it through the use of solar energy.
solar system the Sun, its nine planets and their satellites, and all other bodies that orbit it.