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Sojourner Truth American evangelist, abolitionist, orator, and women's rights activist. An African American woman, Sojourner Truth had been enslaved before going on to become an evangelist as well as a moving and persuasive speaker on the subject of racial and gender equality; born Isabella Baumfree (b. 1797?--d. 1883).
Sol in Roman mythology, the god of the sun; Helios. [2 definitions]
sol1 in music, the syllable that denotes the fifth tone of a diatonic scale. (See sol-fa.) [2 definitions]
sol2 a coin and monetary unit of France prior to the French Revolution, worth one-twentieth of a livre or twelve deniers.
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. [4 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 energy radiant energy from the sun or any form of energy that is produced using radiant energy from the sun.
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.
solar installer a person whose job is to install solar panels.
solarium a room or porch that is enclosed in glass to admit sunlight for relaxation or convalescence.