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n. A soft, silvery, highly reactive metallic element that is used as a heat transfer medium, in thermonuclear weapons, and in various alloys, ceramics, and optical forms of glass. Atomic number 3; atomic weight 6.941; melting point 179°C; boiling point 1,317°C; specific gravity 0.534; valence 1. See Table at element.

n. Any of several salts of lithium, especially lithium carbonate.

n. The simplest alkali metal, the lightest solid element, and the third lightest chemical element (symbol Li) with an atomic number of 3.

n. Lithium carbonate or other preparations of lithium metal used to treat manic depression and bipolar disorders.

n. A lithium battery.

n. A metallic element of the alkaline group, occurring in several minerals, as petalite, spodumene, lepidolite, triphylite, etc., and otherwise widely disseminated, though in small quantities.

n. Chemical symbol, Li or L; atomic weight, A metallic element having a silver-white luster, quickly tarnishing in the air.

n. a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals

"The name lithium comes from the Greek word lithos which means stone because lithium was first discovered in rocks and the other two alkali metals were first discovered in plants."

metallic element    metal   

dilithium   

magnesium    strontium    cesium    manganese    chlorine    cadmium    zinc    ferric    hydroxide    chloride