Meanings
nounLah number (plural Lah numbers)
plural Lah numbers
- mathematicsAny of a class of coefficients expressing rising factorials in terms of falling factorials.
Origin
Discovered by Ivo Lah in 1954.
Full word history & related roots →Cite this entry
APA
Lah number. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Lah%20number
MLA
“Lah number.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Lah%20number. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “Lah number,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Lah%20number.
Source: Lah number on Wiktionary, CC BY-SA 4.0.