a cardinal or ordinal number used in the comparison of infinite sets for which several types of infinity can be classified
the set of integers and the set of real numbers have different transfinite numbers
transfinite number in American English
noun
Math
an infinite cardinal or ordinal number
Word origin
[1900–05]This word is first recorded in the period 1900–05. Other words that entered Englishat around the same time include: Young Turk, clone, elder statesman, hormone, hydroplane