a cardinal number, 90 plus 1.
a symbol for this number, as 91 or XCI.
a set of this many persons or things.
amounting to 91 in number.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use ninety-one in a sentence
The number and names of the ninety-one nuns voting in 1333 at the election of Johanna Icthe has come down to us.Bell's Cathedrals: A Short Account of Romsey Abbey | Thomas Perkins
In 1333 there were ninety-one, but after a time the numbers decreased, and at the dissolution there were only twenty-six.Bell's Cathedrals: A Short Account of Romsey Abbey | Thomas Perkins
This was lost, but it was only by a majority of two hundred and ninety-one against two hundred and sixty-five.
A long discussion ensued; but on a division the resolutions were negatived by a majority of ninety-one against twenty-nine.
On a division the amendment was negatived by a majority of ninety-one against eleven.