Meanings
nounPrandtl number (plural Prandtl numbers)
plural Prandtl numbers
- fluid dynamicsA dimensionless number (symbol Pr) defined as the ratio of momentum diffusivity to thermal diffusivity.
Origin
By surface analysis, Prandtl + number. Named after the German physicist Ludwig Prandtl.
Full word history & related roots →Translations
Chinese Mandarin 普朗特數 /普朗特数
- 普朗特數 /普朗特数 (Pǔlǎngtè shù)dimensionless number
Cite this entry
APA
Prandtl number. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Prandtl%20number
MLA
“Prandtl number.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Prandtl%20number. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “Prandtl number,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Prandtl%20number.
Source: Prandtl number on Wiktionary, CC BY-SA 4.0.