noun, plural bil·lions, (as after a numeral) bil·lion.
- billings method,
- billings, josh,
- billings, william,
Origin of billion
Examples from the Web for billionth
The temperature of Cygnus X-1 from Hawking radiation is roughly a billionth of a degree above absolute zero.
We've moved from computers with a trillionth of the power of a human brain to computers with a billionth of the power.
Thus, to trace it, the autopsy doctors would have to find, separate or segregate a billionth bit of the mass under observation.
We may be cousins to the worm, at the billionth remove; but we are not brothers.The Color Line|William Benjamin Smith
The vibrations which thus occasion light are, at a mean, 555 in the billionth of a second.History of the Intellectual Development of Europe, Volume II (of 2)|John William Draper
noun plural -lions or -lion
- amounting to a billionit seems like a billion years ago
- (as pronoun)we have a billion here
Word Origin for billion
1680s, from French billion (originally byllion in Chuquet's unpublished "Le Triparty en la Science des Nombres," 1484; copied by De la Roche, 1520), from bi- "two" (see bi-) + (m)illion. A million million in Britain and Germany (numeration by groups of sixes), which was the original sense; subsequently altered in French to "a thousand million" (numeration by groups of threes) and picked up in that form in U.S., "due in part to French influence after the Revolutionary War" [David E. Smith, "History of Mathematics," 1925]. France then reverted to the original meaning in 1948. British usage is truer to the etymology, but U.S. sense is said to be increasingly common there in technical writing.