What is the meaning of billionth?

noun

  • Position 1, 000, 000, 000 in a countable series of things.
  • One part in a billion equal parts.

adjective

  • The ordinal number of one billion in counting order. .
WordNet 3.0 © 2006 by Princeton University
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APAWordNet. (2010). billionth. Retrieved September 20, 2026, from http://smartdefine.org/billionth/definitions/1169316
ChicagoWordNet. 2010. "billionth" http://smartdefine.org/billionth/definitions/1169316 (accessed September 20, 2026).
HarvardWordNet 2010, billionth, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/billionth/definitions/1169316>.
MLAWordNet. "billionth" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/billionth/definitions/1169316>