BILLIONTH • DICTIONARY ONE.COM • Definition of Billionth

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/bˈɪljənθ/ Listen

Billionth

noun

Position 1,000,000,000 in a countable series of things.

One part in a billion equal parts. Synonym: one-billionth.

adjective

The ordinal number of one billion in counting order.

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Etymology of 'Billionth'

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"Billionth" Quotes from Famous Books

... destroyed. Men, cattle, birds, vermin, wild beasts. The gas is invisible and inodorous. These gentlemen believe it may be a form of hydrocyanic acid, but of a concentration beyond anything known to chemistry, so deadly that a billionth part of it to one of air must be fatal, otherwise it could not have traveled as it has done. Warnings have been broadcasted, but there are no stocks of chemicals that might counteract it. Flight is the only hope—flight ...

— Astounding Stories of Super-Science, October, 1930 • Various

... what stage of life in a man, had corresponded seventeen thousand years in a Mammoth. Now exactly this was what Kant desired to know about our planet. Let her have lived any number of years that you suggest, (shall we say if you please, that she is in her billionth year?) still that tells us nothing about the period of life, the stage, which she may be supposed to have reached. Is she a child, in fact, or is she an adult? And, if an adult, and that you gave a ball to the Solar System, is she that kind of person, that you would introduce ...

— Narrative And Miscellaneous Papers • Thomas De Quincey