one-hundred-millionth

1. not comparableThe ordinal form of the number one hundred million.

   Synonyms: hundred-millionth

plural one-hundred-millionths

1. One of one hundred million equal parts of a whole.

   Processing speed of a silicon chip: one-hundred-millionth of a second

   1996 October 13, Robert Lee Hotz, “Deciphering the Miracles of the Mind”, in Los Angeles Times, Los Angeles, Calif.: Los Angeles Times Communications, →ISSN, →OCLC, archived from the original on 17 Nov 2025

   2 more examples

   In “The Anatomy of Science,” published in 1926, Gilbert N. Lewis, a brilliantly iconoclastic chemist, who liked to be accurate about such things, computed the actual probability that an object weighing one one-hundred-millionth of a gram, if looked at once a second, will ever be found one ten-millionth of a centimetre above a supporting surface.

   1976 February 2, Barry Commoner, “Energy-1”, in The New Yorker, New York, N.Y.: Condé Nast Publications, →ISSN, →OCLC, archived from the original on 17 Nov 2025

   The invention consists of a thin film covered with regularly spaced holes measuring about 100 angstroms in diameter, or about one one-hundred millionth of a meter.

   1989 February 11, Edmund L. Andrews, “atents; Developing Machinery the Size of a Molecule”, in The New York Times, New York, N.Y.: The New York Times Company, →ISSN, →OCLC, archived from the original on 25 May 2015

   Synonyms: hundred-millionth