You can overdose on coffee if you drink about 30 cups in a brief period to get close to a lethal dosage of caffeine.
POLONIUM
polonium, Po, atomic number
(noun) a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor
Source: WordNet® 3.1
Etymology
Noun
polonium (usually uncountable, plural poloniums)
A rare, highly radioactive chemical element (symbol Po) with atomic number 84.
Hypernyms
• chalcogen
Source: Wiktionary
Po*lo"ni*um, n. [NL. So named after Poland, in L. form Polonia, one of the discoverers being a Pole.] (Chem.)
Definition: A supposed new element, a radioactive substance discovered by M. and MMe. Curie in pitchblende. It is closely related chemically to bismuth. It emits only alpha rays and is perhaps identical with radium F.
Source: Webster’s Unabridged Dictionary 1913 Edition
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GUILLOTINE
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