# Planckian

> English word · Adjective

## Definitions
1. Of or pertaining to Max Planck (1858–1947), German physicist and founder of quantum theory.
2. Relating to the Planck length or Planck time.

## Etymology
From Planck + -ian.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/planckian