Planck
/ˈplɑ(ː)ŋk/ noun C2- Used attributively in the names of various units, formulae etc. first devised or worked on by the German physicist Max Planck (1858–1947), chiefly in the realm of quantum theory.
- A Planck unit.
Plural Plancks
Learn Planck in real texts
With a free account, hover any word in the library for its meaning, hear it read aloud, save words for review timed to your memory, and see how much of each book you already know.