: the number of elements in the set of all integers which is the smallest transfinite cardinal number

Word History

First Known Use

circa 1909, in the meaning defined above

Time Traveler
The first known use of aleph-null was circa 1909

Dictionary Entries Near aleph-null

Cite this Entry

“Aleph-null.” Dictionary, Merriam-Webster, Accessed 8 Dec. 2023.

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