follow Dictionary.com

What is the X in X-mas?

aleph-null

[ah-lif-nuhl] /ˈɑ lɪfˈnʌl/
noun, Mathematics
1.
the cardinal number of the set of all positive integers; the smallest transfinite cardinal number.
Also called aleph-zero
[ah-lif-zeer-oh] /ˈɑ lɪfˈzɪər oʊ/ (Show IPA)
.
Origin
1905-1910
1905-10
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
British Dictionary definitions for aleph-zero

aleph-null

noun
1.
the smallest infinite cardinal number; the cardinal number of the set of positive integers א0
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
aleph-zero in Science
aleph-null
  (ä'lěf-nŭl')   
The first of the transfinite cardinal numbers, corresponding to the number of elements in the set of positive integers.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for aleph-null

Few English speakers likely know this word

Word Value for aleph

10
11
Scrabble Words With Friends

Quotes with aleph-zero