Prandtl number (Pr) is a dimensionless quantity used in fluid mechanics, defined by
where η is viscosity, ρ is density, and a is thermal diffusivity.
Generalic, Eni. "Prandtl number." Croatian-English Chemistry Dictionary & Glossary. 29 June 2022. KTF-Split. {Date of access}. <https://glossary.periodni.com>.
Glossary
Periodic Table