a cardinal number, 50 plus 1.
a symbol for this number, as 51 or LI.
a set of this many persons or things.


amounting to 51 in number. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for fifty-one

Contemporary Examples of fifty-one

  • From late 1921 and for the next eight years, a “new building went up in New York City every fifty-one minutes, on average.”

    The Daily Beast logo
    When New York City Hit Its Stride

    Allen Barra

    July 17, 2014

  • Even now, at fifty-one, Herschel Walker is one of the most impressive athletes in the world.

    The Daily Beast logo
    Are We Killing Our Sports Gene?

    David Epstein

    August 4, 2013

Historical Examples of fifty-one