4 definition by Cosmo B. Smith

Top Definition
The third element in the Periodic Table.
3P
3N
3E
I got a third degree burn when lithium made contact with my skin.
by Cosmo B. Smith January 23, 2005

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The radioactive afterproduct of Radium-226 through alpha decay.
there is radon in that hole.
by Cosmo B. Smith January 23, 2005

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A reddish powder in the form Fe3O4.
Iron oxide forms naturally.
by Cosmo B. Smith January 23, 2005

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Legal 12th president of the US.
David Rice Atchison is dead.
by Cosmo B. Smith January 23, 2005

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