Meaning of LITHIUM
| Pronunciation: | | 'litheeum
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 WordNet Dictionary |
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| | Definition: | | [n] a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals |
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| | Synonyms: | | atomic number 3, Li |
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| | See Also: | | amblygonite, lepidolite, metal, metallic element, spodumene, zinnwaldite | |
| Webster's 1913 Dictionary |
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| | Definition: | | \Lith"i*um\ (l[i^]th"[i^]*[u^]m), n. [NL., from Gr.
li`qeios of stone, fr. li`qos stone.] (Chem.)
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.
Note: When isolated it is a soft, silver white metal,
tarnishing and oxidizing very rapidly in the air. It is
the lightest solid element known, specific gravity
being 0.59. Symbol Li. Atomic weight 7.0 So called from
having been discovered in a mineral.
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| Biology Dictionary |
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| | Definition: | | Lithium is a metallic element which has an atomic number of 3 and an atomic weight of 6.941. It is classed as an "alkali metal" and in its pure form is silvery white. Its ores were first discovered in 1817 by Johan August Arvedson in Sweden and later isolated by W.T Brande and Humphrey Davy. It is somewhat toxic, and some lithium compounds can cause cancer or birth defects, but lithium carbonate (Li2CO3) is useful as a drug to treat depression and manic-depressive disorders. Lithium is found naturally in the body at about 1.3 parts per million in bone and 0.023 parts per million in muscle tissue. |
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