Word: sextillionth
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Dates: during 1940-1949
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...Alamos (atom bomb) Laboratory, postulated a new sub-atomic particle: the neutral meson, which leads an even more feverishly active life than the positive and negative meson which scientists already know about. In its normal habitat within an atomic nucleus, it "lives" only one hundredth of a sextillionth (1/100,000,000,000,000,000,000,000th) of a second. The neutral meson's brief life, remarked Professor Oppenheimer, may be the reason no physicist has yet seen...
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